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Spotting and blacklisting malicious COVID-19-themed sites

April 7, 2020

Since last December, over 136,000 new COVID-19-themed domains have popped up and, while many host legitimate websites, others have been set up to serve malware, phishing pages, or to scam visitors.

SpyCloud researchers have also discovered that existing community threat intelligence feeds such as Google Safe Browsing, OpenPhish or ThreatsHub flag only a small percent of the domains as malicious.

“One potential reason is that the feeds we used have a focus on threat intelligence specific to phishing and malware, not necessarily scam sites. In addition, these feeds are sometimes automatically ingested into security products, increasing the potential impact of false positives because they could cause service disruptions in corporate and private networks,” the researchers noted.

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