A recently discovered threat, dubbed “Stegano” by anti-virus provider Eset, has potentially compromised millions of computers via malicious advertisements.
Essentially, malicious code is embedded into advertisement banners in the image’s alpha channel and it is virtually undetectable to the naked eye. The malicious code redirects the browser to a site that hosts three exploits for known Adobe Flash vulnerabilities (now patched in newer versions of Flash).
But do not panic; there are a couple simple steps you can take to protect yourself. First, patch your Adobe Flash by installing the latest version from the Adobe website. Second, install a browser plugin that blocks website advertisements – AdBlock Plus is great for this. Finally, if you suspect that you may have been exposed to this threat, make sure that your anti-virus software is up to date and run a virus scan. Should you need assistance, we are always here and happy to help!
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