Apple has disabled group FaceTime calls after it was humiliated on Data Privacy Day by a bug that lets people listen in on you

  • Apple temporarily disabled group FaceTime calls after it was alerted to a major bug, which allows iPhone or iPad users to secretly hear what someone is saying before they answer the call.
  • Twitter CEO Jack Dorsey was among those advising people to disable FaceTime until Apple releases a fix, which it said could be as early as this week.
  • The bug is acutely embarrassing for Apple, which has long touted its privacy credentials. It also surfaced on Data Privacy Day, when CEO Tim Cook called for privacy reforms.

Apple has been carefully cultivating its image as the prince of privacy in Silicon Valley over recent months.

The iPhone maker has tried to cement its reputation has the defender of its users' data through speeches, thinly disguised attacks on rivals like Facebook, and giant Las Vegas billboards at CES. But on Monday, the shine of Apple's rhetoric was smudged by an embarrassing FaceTime bug.

The bug allows an iPhone or iPad user to secretly hear what someone is saying before they answer the call. Apple has now temporarily shut down group FaceTime calls, which trigger the bug.

The issue surfaced on Twitter and Snapchat and quickly went viral, even making its way up to the Twitter CEO himself, Jack Dorsey, who advised his followers to disable FaceTime while Apple figures out a fix.

Here's the bug in action:

It's not clear how long the FaceTime bug has been out in the wild. A Twitter user, named MGT7, said their teenage son discovered the bug last week.

MGT7 tweeted at Apple Support on 21 January alerting employees to the vulnerability. On Monday, they published an email sent to Apple. "My teenage son has discovered a major privacy flaw in your newest update that allows users to listen in on other individuals without their permission," the email said.

Related: Apple iPhone 6 customers

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TORONTO, ON - SEPTEMBER 19: 24 yr old Dani Winters lined up since Wednesday at 6pm to get his 128 gig iphone 6 only to nearly drop it once he took it out of the package because of the different feel to itPeople lined up at the Eatons Centre in Toronto some of them for days to be first to get their hands on the new iphone 6 with its bigger screen the line ups stretched all aroung the top of the Eaton Centre from the Apple store and wound its way down to the lower levels. (Colin McConnell/Toronto Star via Getty Images)
TORONTO, ON - SEPTEMBER 19: People lined up at the Eatons Centre in Toronto some of them for days to be first to get their hands on the new iphone 6 with its bigger screen the line ups stretched all around the top of the Eaton Centre from the Apple store and wound its way down to the lower levels. (Colin McConnell/Toronto Star via Getty Images)
NEW YORK, UNITED STATES - SEPTEMBER 19: A line of customers on 59th street as they wait to enter the Fifth Avenue Apple store to purchase the new iPhone 6 in New York, United States on 19 September 2014. The new iPhone 6 and iPhone 6 Plus models went on sale this morning. (Photo by Bilgin S. Sasmaz/Anadolu Agency/Getty Images)
Tony Zhan checks out his new iPhone 6 Plus outside the Apple store in Pasadena, California on the first day of sale, September 19, 2014. The California tech giant has said more than four million pre-orders were received in the 24 hours after the sale of the new devices was announced. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
Customer Amanda Germaine looks at her new iPhone 6 during the sales launch at the Apple Inc. store in Palo Alto, California, U.S., on Friday, Sept. 19, 2014. Apple Inc.'s stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. The larger iPhone 6 Plus is already selling out at some stores across the U.S. Photographer: David Paul Morris/Bloomberg via Getty Images
Eric Huerta waves as he comes out of the Apple store in Pasadena, California with his new iPhone 6 on the first day of its sale to the public, September 19, 2014. The California tech giant has said more than four million pre-orders were received in the 24 hours after the sale of the new devices was announced. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
Tim Cook, chief executive officer of Apple Inc., waves while standing for a photograph during the sales launch for the iPhone 6 and iPhone 6 Plus at the Apple Inc. store in Palo Alto, California, U.S., on Friday, Sept. 19, 2014. Apple Inc.'s stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. The larger iPhone 6 Plus is already selling out at some stores across the U.S. Photographer: David Paul Morris/Bloomberg via Getty Images
Tim Cook, chief executive officer of Apple Inc., center, hugs an employee during the sales launch for the iPhone 6 and iPhone 6 Plus at the Apple Inc. store in Palo Alto, California, U.S., on Friday, Sept. 19, 2014. Apple Inc.'s stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. The larger iPhone 6 Plus is already selling out at some stores across the U.S. Photographer: David Paul Morris/Bloomberg via Getty Images
Tim Cook, chief executive officer of Apple Inc., stands for a photograph during the sales launch for the iPhone 6 and iPhone 6 Plus at the Apple Inc. store in Palo Alto, California, U.S., on Friday, Sept. 19, 2014. Apple Inc.'s stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. The larger iPhone 6 Plus is already selling out at some stores across the U.S. Photographer: David Paul Morris/Bloomberg via Getty Images
PALO ALTO, CA - SEPTEMBER 19: Apple Store employees greet as customer as he arrives to purchase the new iPhone 6 on September 19, 2014 in Palo Alto, California. Hundreds of people lined up to purchase the new iPhone 6 and iPhone 6 Plus that went on sale today. (Photo by Justin Sullivan/Getty Images)
LONDON, ENGLAND - SEPTEMBER 19: Tom Hardy gets set up with the new iPhone 6 at The Apple Store, Regent Street on September 19, 2014 in London, England. (Photo by Ben A. Pruchnie/Getty Images)
A customer leaves with his shopping bag and sleeping bag as ines of people wait to get in the Apple store on Fifth Avenue on September 19, 2014 in New York City to purchase the new iPhone 6. The California tech giant has said more than four million pre-orders were received in the 24 hours after the sale of the new devices was announced. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)
PALO ALTO, CA - SEPTEMBER 19: Customers look at the new iPhone 6 at an Apple Store on September 19, 2014 in Palo Alto, California. Hundreds of people lined up to purchase the new iPhone 6 and iPhone 6 Plus that went on sale today. (Photo by Justin Sullivan/Getty Images)
PALO ALTO, CA - SEPTEMBER 19: Apple CEO Tim Cook (R) opens the door to an Apple Store to begin sales of the new iPhone 6 on September 19, 2014 in Palo Alto, California. Hundreds of people lined up to purchase the new iPhone 6 and iPhone 6 Plus that went on sale today. (Photo by Justin Sullivan/Getty Images)
MIAMI, FL - SEPTEMBER 19: A customer shows off his newly purchased iPhone 6 on September 19, 2014 in Miami, Florida. (Photo by Aaron Davidson/Getty Images)
MIAMI, FL - SEPTEMBER 19: A customer speaks to the media ater buying a new iPhone 6 on September 19, 2014 in Miami, Florida. (Photo by Aaron Davidson/Getty Images)
LONDON, ENGLAND - SEPTEMBER 19: (L-R) Charlotte Riley and Tom Hardy gets set up with the new iPhone 6 at The Apple Store, Regent Street on September 19, 2014 in London, England. (Photo by Ben A. Pruchnie/Getty Images)
LONDON, ENGLAND - SEPTEMBER 19: Stacy Martin gets set up with the new iPhone 6 at The Apple Store, Regent Street on September 19, 2014 in London, England. (Photo by Ben A. Pruchnie/Getty Images)
LONDON, ENGLAND - SEPTEMBER 19: Sam Claflin gets set up with the new iPhone 6 at The Apple Store, Regent Street on September 19, 2014 in London, England. (Photo by Ben A. Pruchnie/Getty Images)
LONDON, ENGLAND - SEPTEMBER 19: Sam Claflin gets set up with the new iPhone 6 at The Apple Store, Regent Street on September 19, 2014 in London, England. (Photo by Ben A. Pruchnie/Getty Images)
LONDON, ENGLAND - SEPTEMBER 19: Robert Sheehan gets set up with the new iPhone 6 at The Apple Store, Regent Street on September 19, 2014 in London, England. (Photo by Ben A. Pruchnie/Getty Images)
An employee, left, holds packaged iPhones as customers purchase the new smartphones during the sales launch of the iPhone 6 and iPhone 6 Plus at the Apple Inc. store in Berlin, Germany, on Friday, Sept. 19, 2014. The devices generate more than half of Apple's annual $171 billion in revenue and precede a swath of other products, including new iPads and Apple Watch. Photographer: Krisztian Bocsi/Bloomberg via Getty Images
A customer holds a iPhone 6 Plus during the sales launch of the latest Apple Inc. iPhone 6 and iPhone 6 Plus smartphones at the Apple store in Berlin, Germany, on Friday, Sept. 19, 2014. The devices generate more than half of Apple's annual $171 billion in revenue and precede a swath of other products, including new iPads and Apple Watch. Photographer: Krisztian Bocsi/Bloomberg via Getty Images
A customer, left, holds a iPhone 6 Plus during the sales launch of the latest Apple Inc. iPhone 6 and iPhone 6 Plus smartphones at the Apple store in Berlin, Germany, on Friday, Sept. 19, 2014. The devices generate more than half of Apple's annual $171 billion in revenue and precede a swath of other products, including new iPads and Apple Watch. Photographer: Krisztian Bocsi/Bloomberg via Getty Images
A customer, right, takes a 'selfie' photograph with an iPhone 6 Plus during the sales launch of the latest Apple Inc. iPhone 6 and iPhone 6 Plus smartphones at the Apple store in Berlin, Germany, on Friday, Sept. 19, 2014. The devices generate more than half of Apple's annual $171 billion in revenue and precede a swath of other products, including new iPads and Apple Watch. Photographer: Krisztian Bocsi/Bloomberg via Getty Images
A customer holds a iPhone 6 Plus, left, and iPhone 6 during the sales launch of the latest Apple Inc. smartphones at the Apple store in Berlin, Germany, on Friday, Sept. 19, 2014. The devices generate more than half of Apple's annual $171 billion in revenue and precede a swath of other products, including new iPads and Apple Watch. Photographer: Krisztian Bocsi/Bloomberg via Getty Images
A man looks at a boxed Apple Inc. iPhone as people resell the devices outside the company's Causeway Bay store during the sales launch of the iPhone 6 and iPhone 6 Plus in Hong Kong, China, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Jerome Favre/Bloomberg via Getty Images
A woman counts Hong Kong dollar banknotes as people resell Apple Inc. iPhones across from the company's Causeway Bay store during the sales launch of the iPhone 6 and iPhone 6 Plus in Hong Kong, China, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Jerome Favre/Bloomberg via Getty Images
A man counts Hong Kong one-thousand dollar banknotes as people resell Apple Inc. iPhones across from the company's Causeway Bay store during the sales launch of the iPhone 6 and iPhone 6 Plus in Hong Kong, China, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Jerome Favre/Bloomberg via Getty Images
A customer carries her newly purchased Apple Inc. iPhone 6 at the company's Causeway Bay store during the sales launch of the iPhone 6 and iPhone 6 Plus in Hong Kong, China, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Jerome Favre/Bloomberg via Getty Images
A customer purchases an Apple Inc. iPhone 6 at the company's Causeway Bay store during the sales launch of the iPhone 6 and iPhone 6 Plus in Hong Kong, China, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Jerome Favre/Bloomberg via Getty Images
A customer purchases an Apple Inc. iPhone 6 at the company's Causeway Bay store during the sales launch of the iPhone 6 and iPhone 6 Plus in Hong Kong, China, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Jerome Favre/Bloomberg via Getty Images
A customer tries the Siri voice recognition function on an Apple Inc. iPhone 6 Plus at the company's Causeway Bay store during the sales launch of the iPhone 6 and iPhone 6 Plus in Hong Kong, China, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Jerome Favre/Bloomberg via Getty Images
Customers look at an Apple Inc. iPhone 6 at the company's Causeway Bay store during the sales launch of the iPhone 6 and iPhone 6 Plus in Hong Kong, China, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Jerome Favre/Bloomberg via Getty Images
A sign stands on a display table as customers try out Apple Inc.'s iPhone 6 and iPhone 6 Plus during the sales launch of the smartphones at the company's Causeway Bay store in Hong Kong, China, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Jerome Favre/Bloomberg via Getty Images
A customer reaches for an Apple Inc. iPhone 6 Plus at the company's Causeway Bay store during the sales launch of the iPhone 6 and iPhone 6 Plus in Hong Kong, China, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Jerome Favre/Bloomberg via Getty Images
An Apple Inc. employee arranges boxes of the iPhone 6 at the company's Causeway Bay store during the sales launch of the iPhone 6 and iPhone 6 Plus in Hong Kong, China, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Jerome Favre/Bloomberg via Getty Images
A customer tries out an Apple Inc. iPhone 6 Plus at the company's Causeway Bay store during the sales launch of the iPhone 6 and iPhone 6 Plus in Hong Kong, China, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Jerome Favre/Bloomberg via Getty Images
PARIS, FRANCE - SEPTEMBER 19: General view of the the Apple Store Opera during the launch of the iPhone 6, on September 19, 2014 in Paris, France. Apple says more than four million pre-orders were received in the 24 hours after the sale was announced. (Photo by Chesnot/Getty Images)
PARIS, FRANCE - SEPTEMBER 19: Apple Fan Sylvain from Paris holds up the first iPhone 6's purchased at the Apple store Opera on September 19, 2014, in Paris, France. Apple says more than four million pre-orders were received in the 24 hours after the sale was announced. (Photo by Chesnot/Getty Images)
PARIS, FRANCE - SEPTEMBER 19: Apple Fan Sylvain from Paris holds up the first iPhone 6's purchased at the Apple store Opera on September 19, 2014, in Paris, France. Apple says more than four million pre-orders were received in the 24 hours after the sale was announced. (Photo by Chesnot/Getty Images)
LONDON, ENGLAND - SEPTEMBER 19: Jamael Ahmed is the first in the queue to purchase the iPhone 6 at Apple Covent Gardens launch on September 19, 2014 in London, England. (Photo by Ben A. Pruchnie/Getty Images)
LONDON, ENGLAND - SEPTEMBER 19: Jamael Ahmed jumps in the air as he leaves the store after being the first to purchase the iPhone 6 at Apple Covent Gardens launch on September 19, 2014 in London, England. (Photo by Ben A. Pruchnie/Getty Images)
LONDON, ENGLAND - SEPTEMBER 19: JSam Sheikh is the second in the queue to purchase the iPhone 6 at Apple Covent Gardens launch on September 19, 2014 in London, England. (Photo by Ben A. Pruchnie/Getty Images)
LONDON, ENGLAND - SEPTEMBER 19: Jamael Ahmed and Sam Sheikh leave the store after being the first to purchase the iPhone 6 at Apple Covent Gardens launch on September 19, 2014 in London, England. (Photo by Ben A. Pruchnie/Getty Images)
LONDON, ENGLAND - SEPTEMBER 19: A member of the public celebrates at the launch of the iPhone 6 at the Apple store Covent Garden on September 19, 2014 in London, England. (Photo by Ben A. Pruchnie/Getty Images)
LONDON, ENGLAND - SEPTEMBER 19: A member of the public celebrates at the launch of the iPhone 6 at the Apple store Covent Garden on September 19, 2014 in London, England. (Photo by Ben A. Pruchnie/Getty Images)
BERLIN, GERMANY - SEPTEMBER 19: A shopper buys the new Apple iPhone 6 at the Apple Store on the first day of sales of the new phone in Germany on September 19, 2014 in Berlin, Germany. Hundreds of people had waited in a line that went around the block through the night in order to be among the first people to buy the new smartphone, which comes in two versions: the Apple iPhone 6 and the somewhat larger Apple iPhone 6 Plus. (Photo by Sean Gallup/Getty Images)
BERLIN, GERMANY - SEPTEMBER 19: A shopper buys the new Apple iPhone 6 at the Apple Store on the first day of sales of the new phone in Germany on September 19, 2014 in Berlin, Germany. Hundreds of people had waited in a line that went around the block through the night in order to be among the first people to buy the new smartphone, which comes in two versions: the Apple iPhone 6 and the somewhat larger Apple iPhone 6 Plus. (Photo by Sean Gallup/Getty Images)
Singaporean law student Bjorn Tan (L) takes a self photograph with his mother Wendy Heng (R) with his newly purchased iPhone 6 during its launch by Singtel, Singapore telecommunication company in Singapore on September 19, 2014. Singapore is one of the first markets in the world to take delivery of the latest iPhone models which feature large screen handsets. AFP PHOTO / ROMEO GACAD (Photo credit should read ROMEO GACAD/AFP/Getty Images)
Singaporean student Perry Zhao checks his newly purchased iPhone 6 inside a MRT commuter station after its launch by Singtel, Singapore telecommunication company in Singapore on September 19, 2014. Singapore is one of the first markets in the world to take delivery of the latest iPhone models which feature large screen handsets. AFP PHOTO / ROMEO GACAD (Photo credit should read ROMEO GACAD/AFP/Getty Images)
Singaporean customers check a display of a new iPhone 6 during its launch by Singtel, Singapore telecommunication company in Singapore on September 19, 2014. Singapore is one of the first markets in the world to take delivery of the latest iPhone models which feature large screen handsets. AFP PHOTO / ROMEO GACAD (Photo credit should read ROMEO GACAD/AFP/Getty Images)
Angela Ahrendts, senior vice president of retail and online stores at Apple Inc., left, chats with employees at the company's George Street store during the sales launch of the iPhone 6 and iPhone 6 Plus in Sydney, Australia, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Lisa Maree Williams/Bloomberg via Getty Images
Customer Yui Kashima holds an iPhone 6 Plus for a photograph at SoftBank Corp.'s Omotesando store during the sales launch of the iPhone 6 and iPhone 6 Plus in Tokyo, Japan, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Yuriko Nakao/Bloomberg via Getty Images
Customers try out the iPhone 6 and iPhone 6 Plus at the Apple Inc. George Street store during the sales launch of the iPhone 6 and iPhone 6 Plus in Sydney, Australia, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Lisa Maree Williams/Bloomberg via Getty Images
Customers try out the iPhone 6 at the Apple Inc. George Street store during the sales launch of the iPhone 6 and iPhone 6 Plus in Sydney, Australia, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Lisa Maree Williams/Bloomberg via Getty Images
A customer takes a 'selfie' photograph using an iPhone 6 at the Apple Inc. George Street store during the sales launch of the iPhone 6 and iPhone 6 Plus in Sydney, Australia, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Lisa Maree Williams/Bloomberg via Getty Images
Apple Inc. employees assist customers with their purchases during the sales launch of the iPhone 6 and iPhone 6 Plus at the company's George Street store in Sydney, Australia, on Friday, Sept. 19, 2014. Apple stores attracted long lines of shoppers for the debut of the latest iPhones, indicating healthy demand for the bigger-screen smartphones. Photographer: Lisa Maree Williams/Bloomberg via Getty Images
HONG KONG - SEPTEMBER 19: Customers look at the new iPhones on display at the launch of the new Apple iPhone 6 and iphone 6 plus at the Apple IFC store on September 19, 2014 in Hong Kong, China. On September 19, Apple's new products, iPhone 6 and iPhone 6 Plus, with iOS 8 featuring 4.7-inch and 5.5-inch displays, have become available in the US, Australia, Canada, France, Germany, Hong Kong, Japan, Puerto Rico, Singapore and the UK, and will be available in more than 20 additional countries beginning on September 26.(Photo by Lam Yik Fei/Getty Images)
HONG KONG - SEPTEMBER 19: The new iPhone 6 is seen on display at the launch of the new Apple iPhone 6 and iPhone 6 plus at the Apple IFC store on September 19, 2014 in Hong Kong, China. On September 19, Apple's new products, iPhone 6 and iPhone 6 Plus, with iOS 8 featuring 4.7-inch and 5.5-inch displays, have become available in the US, Australia, Canada, France, Germany, Hong Kong, Japan, Puerto Rico, Singapore and the UK, and will be available in more than 20 additional countries beginning on September 26. (Photo by Lam Yik Fei/Getty Images)
Sales clerks (in blue) applaud the first customers showing their iPhone 6 handsets at an Apple store in the Ginza shopping district in Tokyo on September 19, 2014. Apple's new smartphone iPhone 6 was released in Japan on September 19. AFP PHOTO/Toru YAMANAKA (Photo credit should read TORU YAMANAKA/AFP/Getty Images)
Customers display their iPhone 6 handsets at an Apple store in the Ginza shopping district in Tokyo on September 19, 2014. Apple's new smartphone iPhone 6 was released in Japan on September 19. AFP PHOTO/Toru YAMANAKA (Photo credit should read TORU YAMANAKA/AFP/Getty Images)
Customers display their iPhone 6 handsets at an Apple store in the Ginza shopping district in Tokyo on September 19, 2014. Apple's new smartphone iPhone 6 was released in Japan on September 19. AFP PHOTO/Toru YAMANAKA (Photo credit should read TORU YAMANAKA/AFP/Getty Images)
A woman takes photos of displayed iPhone 6 handsets at an Apple store in the Ginza shopping district in Tokyo on September 19, 2014. Apple's new smartphone iPhone 6 was released in Japan on September 19. AFP PHOTO/Toru YAMANAKA (Photo credit should read TORU YAMANAKA/AFP/Getty Images)
The first customer of Apple's newest smartphone iPhone 6 Mr. Butch (L) and Japanese singer Sayaka Kanda display the iPhone 6 (L) and iPhone 6 Plus at the Softbank mobile phone shop in Tokyo on September 19, 2014. Over 200 customers queued up for Apple's new iPhone 6 and iPhone 6 Plus before opening the shop. AFP PHOTO / Yoshikazu TSUNO (Photo credit should read YOSHIKAZU TSUNO/AFP/Getty Images)
An employee of Softbank mobile phone shop displays Apple's new iPhone 6 (R) and iPhone 6 Plus (L) at the company's Omotesando shop in Tokyo on September 19, 2014. Over 200 customers queued up for Apple's new iPhone 6 and iPhone 6 Plus before opening the shop. AFP PHOTO / Yoshikazu TSUNO (Photo credit should read YOSHIKAZU TSUNO/AFP/Getty Images)
An Apple gadget fan displays Apple's newest smartphone iPhone 6 Plus asafter buying it at Softbank's mobile phone shop in Tokyo on September 19, 2014. Over 200 customers queued up for Apple's new iPhone 6 and iPhone 6 Plus before opening the shop. AFP PHOTO / Yoshikazu TSUNO (Photo credit should read YOSHIKAZU TSUNO/AFP/Getty Images)
TOKYO, JAPAN - SEPTEMBER 19: An Apple staff member provides coffee to people waiting in line to purchase a new iPhone at the launch of the new Apple iPhone 6 and iPhone 6 plus at the Apple Omotesando store on September 19, 2014 in Tokyo, Japan. On September 19, Apple's new products, iPhone 6 and iPhone 6 Plus, with iOS 8 featuring 4.7-inch and 5.5-inch displays, have become available in the US, Australia, Canada, France, Germany, Hong Kong, Japan, Puerto Rico, Singapore and the UK, and will be available in more than 20 additional countries beginning on September 26. (Photo by Chris McGrath/Getty Images)
The first buyer of an iPhone 6, David Rahimi (R) and his girlfriend Jasmine Juan (L) from California display their new purchases as they leave the Apple flagship store in Sydney on September 19, 2014. Hundreds of people queued through the night in Sydney to be among the first in the world to get their hands on the new Apple iPhone 6 models with the large-screen handsets drawing keen interest. AFP PHOTO / Saeed KHAN (Photo credit should read SAEED KHAN/AFP/Getty Images)
TOKYO, JAPAN - SEPTEMBER 19: Apple store staff high five customers as they enter the store to purchase the new iPhones at the launch of the new Apple iPhone 6 and iPhone 6 plus at the Apple Omotesando store on September 19, 2014 in Tokyo, Japan. On September 19, Apple's new products, iPhone 6 and iPhone 6 Plus, with iOS 8 featuring 4.7-inch and 5.5-inch displays, have become available in the US, Australia, Canada, France, Germany, Hong Kong, Japan, Puerto Rico, Singapore and the UK, and will be available in more than 20 additional countries beginning on September 26. (Photo by Chris McGrath/Getty Images)
TOKYO, JAPAN - SEPTEMBER 19: Yuki Manno shows off his new iPhone after being the first person to purchase the new device at the launch of the new Apple iPhone 6 and iphone 6 plus at the Apple Omotesando store on September 19, 2014 in Tokyo, Japan. On September 19, Apple's new products, iPhone 6 and iPhone 6 Plus, with iOS 8 featuring 4.7-inch and 5.5-inch displays, have become available in the US, Australia, Canada, France, Germany, Hong Kong, Japan, Puerto Rico, Singapore and the UK, and will be available in more than 20 additional countries beginning on September 26. (Photo by Chris McGrath/Getty Images)
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Business Insider asked Apple why the concerns were not addressed earlier. It declined to provide further information beyond a statement it issued on Monday, in which the company said it has "identified a fix that will be released in a software update later this week."

In the meantime, Apple has disabled Group FaceTime calls. A System Status page on its website shows an amber warning next to FaceTime, with a note saying group calls are "temporarily unavailable."

Apple's FaceTime bug was compounded by the fact that it surfaced on Data Privacy Day. Originating in Europe in 2006, the day is designed to raise awareness about people's personal information.

It was marked on Monday by none other than Apple CEO Tim Cook, who called for "action and reform" and privacy issues — a nod to his previous demands for federal privacy laws in the US.

It also comes less than 24 hours before Apple is due to report close-watched quarterly earnings in which the company is expected to report a decline in iPhone sales.

 

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