https://seclists.org/oss-sec/2026/q2/43: Fwd: [sin] Severity: High – Potential Malicious Campaign Underway Targeting Open Source Developers via Slack
Published Apr 8, 2026
·Updated
Affected Software
4 affected components
Slack Slack
Google Google Workspace
Apple macOS
Microsoft Windows
Frequently Asked Questions
1
What is the severity of the vulnerability reported in the high severity alert for Slack users?
The severity of the vulnerability reported is classified as high.
2
What specific software is affected by the malicious campaign targeting open source developers according to the alert?
The affected software includes Slack, Google Workspace, Apple macOS, and Microsoft Windows.
3
How can developers protect themselves from the malicious campaign targeting open source developers via Slack?
Developers can protect themselves by being cautious of unsolicited messages and verifying the authenticity of requests before responding.
4
What should users do if they believe they have been targeted by the malicious campaign affecting Slack?
Users should report any suspicious activity to the relevant security teams and change their account credentials immediately.
5
When was the potential malicious campaign announced in relation to Slack and its impact on open source developers?
The potential malicious campaign was announced on April 8, 2026.