The Rise of Legitimate-Service Phishing: 1 in 10 Phishing Emails Now Comes From a Platform You Trust
A legitimate sender does not mean legitimate content. Attackers have abused legitimate services such as DocuSign, SharePoint, Adobe Sign, Dropbox and Google Drive to exploit that trust for years. KnowBe4's Phishing Threat Trends Report Vol. 7, released April 2026, flagged this shift at the industry level: 22% of all phishing attacks are now sent through a legitimate platform, with attackers moving from impersonating a brand to abusing that brand's actual infrastructure.