If your computer’s running on Microsoft Windows, you need to take these steps—right away.
Here’s why: in case you haven’t heard, hackers exploited a vulnerability in older Microsoft Windows servers to execute a large-scale global cyberattack on Friday using ransomware — a malicious software that holds your computer hostage for ransom — and a hacking tool stolen from the U.S. National Security Agency (NSA). The massive attack left victims locked out of their PCs with a promise of restored access if $300 was paid in digital currency Bitcoin—and a threat of destroyed files if the ransom is not met.
Thus far, at least 200,000 computers have been infected in more than 150 countries, leaving everything from businesses and governments to academic institutions, hospitals and ordinary people affected.
How it works
The malware, which “spreads like a worm,” is transmitted through a phishing email containing a compressed, encrypted file. Since the file is encrypted, security systems do not identify the ransomware, called Wanna Decryptor, until after it is downloaded. Wanna Decryptor, a next-gen version of the WannaCry ransomware, gains access to a given device once the malware-filled file is downloaded: it then encrypts data, locks down the system and demands ransom.
Ransomware does not typically work this quickly. But thanks to a stolen NSA cyber-weapon called EternalBlue, which was made public last month by a hacking group known as the “Shadow Brokers,” the malware spread rapidly by exploiting a security flaw in Microsoft Windows servers.
What users need to do
Simply put: make sure your Microsoft Windows server is up to date. Microsoft issued a patch in mid-March to fix the hole in Windows 7 and other supported versions of Windows: Vista, Server 2008, Server 2008 R2, 8.1, Server 2012, RT 8.1, 10, Server 2012 R2, and Server 2016. But those who did not apply the software update were—and still are—left exposed to the hack.
In light of the attack, Microsoft rolled out patches to protect older versions of Windows that “no longer receive mainstream support” from the company like Windows XP, Windows 8, and Windows Server 2003. Those…
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