KiteWorks warns of imminent zero-day, urges shutdown
The gist
KiteWorks told customers worldwide to shut down servers for six hours starting Saturday.
The file-transfer vendor says the move is preventative, not a confirmed breach.
How it unfolded
- Sep 25, 2026KiteWorks emailed customers urging them to temporarily shut down their servers due to an imminent cyberattack threat, confirming all customer systems worldwide are to be shut down for six hours starting Saturday.
- Sep 25, 2026In Central Europe, systems are to be shut down Saturday, September 26, from 4 a.m. to 10 a.m., with KiteWorks recommending shutdown even before that time, even for servers not accessible from the internet.
- Sep 25, 2026Kiteworks confirmed to TechCrunch it had notified customers about a potential attack; the news was first reported exclusively by German publication Heise.