Why bogus Microsoft patches aren’t always malicious

For years we’ve been warning you about fake Microsoft security patches – usually these have been spammed out by hackers, using forged email headers to pretend to come from the software giant, and recommending you install the attached file immediately to protect against an internet threat.

Of course, if you do run that bogus patch from ‘Microsoft’ you’ll find it’s really a Trojan horse, or a worm, or something else designed to undermine the security of your PC. This is one of the reasons why Microsoft reminds users that it never sends out patches via email.

Here is an example of a fake Microsoft security update from last October:

In light of this, some people may raise an eyebrow at the news that Microsoft has announced it is…

Read more in my article on the Naked Security website.

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Graham Cluley is a veteran of the cybersecurity industry, having worked for a number of security companies since the early 1990s when he wrote the first ever version of Dr Solomon's Anti-Virus Toolkit for Windows. Now an independent analyst, he regularly makes media appearances and is an international public speaker on the topic of cybersecurity, hackers, and online privacy. Follow him on Twitter, Mastodon, Threads, Bluesky, or drop him an email.