An unknown threat actor has been linked to a massive scam campaign that exploited an email routing misconfiguration in email security vendor Proofpoint’s defenses to send millions of messages spoofing various popular companies like Best Buy, IBM, Nike, and Walt Disney, among others.
“These emails echoed from official Proofpoint email relays with authenticated SPF and DKIM signatures, thus

An unknown threat actor has been linked to a massive scam campaign that exploited an email routing misconfiguration in email security vendor Proofpoint’s defenses to send millions of messages spoofing various popular companies like Best Buy, IBM, Nike, and Walt Disney, among others.
“These emails echoed from official Proofpoint email relays with authenticated SPF and DKIM signatures, thus