What is Ransomware? How to protect yourself from the cyberattack software
A global WannaCry "ransomware" cyberattack hit users last Friday, and has already infected more than 300,000 users in 150 countries.
The attacks, which experts say are potentially linked to North Korea, are among the fastest-spreading extortion campaigns on record, according to Reuters.
The attack leveraged hacking tools believed to have been developed by the U.S. National Security Agency, and disrupted hospital and companies including Britain's health system and global shipper FedEx.
Cyber extortionists tricked victims into opening malicious malware attachments to spam emails that appeared to contain invoices, job offers, security warnings and other legitimate files.
The ransomware encrypted data on the computers, demanding payments of $300 to $600 to restore access. Security researchers said they observed some victims paying via the digital currency bitcoin, though they did not know what percent had given in to the extortionists.
Here is what you need to know about protecting yourself from Ransomware cyber attacks: