Skip to main content

Microsoft now blocks reply-all email storms to end our inbox nightmares


Microsoft is rolling out a new reply-all protection feature for Office 365 and Exchange Online. It’s designed to prevent email storms (reply allpocalypse), when hundreds or thousands of people start replying to an email thread after someone forgot to BCC everyone or a distribution list was misconfigured.
The new block feature will mostly benefit large organizations, and is initially being rolled out to detect 10 reply-all emails to over 5,000 recipients within 60 minutes. “Over time, as we gather usage telemetry and customer feedback, we expect to tweak, fine-tune, and enhance the Reply All Storm Protection feature to make it even more valuable to a broader range of Office 365 customers,” explains Microsoft’s Exchange transport team.
Reply-all email storms are a problem that affect businesses large and small, and have been occurring for decades. Microsoft had its own infamous incident back in 1997, which employees fondly refer to as Bedlam DL3. Around 25,000 people were on a distribution list and kept replying to the thread, generating 15,000,000 email messages and 195 gigabytes of data. The incident overwhelmed Microsoft’s own Exchange mail servers, and the company rolled out a message recipient limit in Exchange to try and tackle future problems.
Microsoft still suffers from reply-all email storms, though. Last year a GitHub notification triggered an email storm for thousands of Microsoft employees. Back in March, thousands of Microsoft employees were also caught in a reply-all email thread that was quickly shut down within 30 minutes.
Microsoft’s new reply-all email block feature will stay in place for four hours after it’s automatically triggered, enough time to stop people from asking “why am I on this email thread?” hundreds of times. The new feature appears to be working for Microsoft’s own employees. “Humans still behave like humans no matter which company they work for,” says the Exchange team. “We’re already seeing the first version of the feature successfully reduce the impact of reply-all storms within Microsoft.”

Originally published at https://www.theverge.com on May 10, 2020.

Comments

Popular posts from this blog

Bogus Android Clubhouse App Drops Credential-Swiping Malware

The malicious app spreads the BlackRock malware, which steals credentials from 458 services — including Twitter, WhatsApp, Facebook and Amazon. Researchers are warning of a fake version of the popular audio chat app Clubhouse, which delivers malware that steals login credentials for more than 450 apps. Clubhouse has burst on the social media scene over the past few months, gaining hype through its audio-chat rooms where participants can discuss anything from politics to relationships. Despite being invite-only, and only being around for a year, the app is closing in on 13 million downloads . However, as of now the app is only available on Apple’s App Store mobile application marketplace — there’s no Android version yet (though plans are in the works to develop one). Cybercriminals are swooping in on Android users looking to download Clubhouse by creating their own fake Android version of the app. To add a legitimacy to the scam, the fake app is delivered from a website purporting to b...

Razer has created a concept N95 mask with RGB and voice projection

  Razer claims to have made the world’s smartest mask: its new reusable N95 respirator called Project Hazel. It’s a concept design with a glossy outside shell made of waterproof and scratch-resistant recycled plastic, which is transparent to allow for lip-reading and seeing facial cues when you chat with people. Currently, there isn’t a price or release date attached. Razer refers to Project Hazel as a surgical N95, but it hasn’t yet earned any of the necessary approvals and certifications from the Food and Drug Administration, the Centers for Disease Control and Prevention, or Occupational Safety and Health Administration. In a statement to The Verge , Razer said it is working with a team of medical experts and scientists who are helping to develop the mask. The main features of this mask lie within its two circular zones that flank your mouth. They’re used for ventilation, giving the device an almost futuristic gas mask look. Razer claims Project Hazel will use active disc-type v...

Hackers Compromise Mimecast Certificate For Microsoft Authentication

A sophisticated threat actor compromised a Mimecast certificate used to authenticate several of the company’s products to Microsoft 365 Exchange Web Services, Mimecast disclosed Tuesday. The Lexington, Mass.-based email security vendor said the certificate used to authenticate its Sync and Recover, Continuity Monitor and Internal Email Protect (IEP) products to Microsoft 365 has been compromised. Mimecast said it was recently informed of the compromise by Microsoft. Mimecast’s stock is down $2.40 per share (4.67 percent) to $49 per share in pre-market trading Tuesday, which is the lowest the company’s stock has traded since Dec. 15. Mimecast declined to answer questions about whether the compromise of its certificate was carried out by the same threat actor who for months injected malicious code into the SolarWinds Orion network monitoring tool. Approximately 10 percent of Mimecast’s customers use the compromised connection, according to the company. Of those that do, Mimecast said cu...