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35,000 users. 13,000 organisations. 26 countries. All hit in 48 hours. Microsoft Defender Research has uncovered a phishing campaign that targeted more than 35,000 users at over 13,000 organisations across 26 countries between 14 and 16 April 2026. The lure? Fake workplace code-of-conduct emails. The payload? Stolen authentication tokens, lifted via an adversary-in-the-middle (A...

Insider One has acquired Bluecore, a retail marketing technology company serving more than 400 US enterprise brands, in a deal aimed at strengthening Insider One’s data infrastructure and retail customer engagement capabilities. Financial terms were not disclosed. Bluecore, based in New York, is known for technology that helps retailers identify shoppers and use behavioural data...

M3AAWG, the Messaging, Malware and Mobile Anti-Abuse Working Group, published an April 2026 update to its “TLS for Mail” baseline recommendations on its website, urging messaging providers to use modern TLS protections to reduce eavesdropping risks across email transport, internal infrastructure and user authentication. The updated document, “TLS for Mail: M3AAWG Baseline Recomm...

Google is rolling out AI Overviews in Gmail search to more business and education users, allowing people to ask natural language questions in the Gmail search bar and receive concise AI-generated answers drawn from relevant email threads. Announced on 22 April 2026, the feature is designed to reduce the time spent digging through fragmented conversations […]

KumoMTA has announced its April 2026 “Astronomical Spring” release, introducing a series of operational and developer-focused improvements for large-scale senders. The headline addition is a new kumo.jsonl module for reading and writing zstd-compressed JSONL log segment files. This enables operators to ship logs and run webhook processing out of band, using separate long-running...