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A flaw in Proofpoint’s anti-phishing platform allowed a hacker to send millions of spam emails

Phishing campaigns were undertaken by a malicious actor through an exploited configuration of Proofpoint’s anti-phishing platform, allowing a malicious actor to send spam emails according to the firm. Dubbed “EchoSpoofing,” a report from Guardio Labs estimated that cyber criminals could have sent an approximate daily average of three million emails a day – with peak daily numbers reaching as high…