Massive ois[.]is Black Hat Redirect Malware Campaign
Since September 2022, our research team has tracked a surge in WordPress malware redirecting website visitors to fake Q&A sites via ois[.]is. These malicious redirects appear to be designed to increase the authority of the attacker’s sites for search engines.
PublicWWW results show nearly 15,000 websites have been affected by this malware so far. Our own SiteCheck scanner has detected these redirects on over 2,500 sites during September and October.