SIGNAL//SYNTH
Ai

Microsoft Exchange Zero-Day Under Attack: One Email Hijacks OWA

aired Jun 05, 2026
Signal
67.3/ 100
Solid
confidence 0.99
Orig50.2
Actn100.0
Dens72.8
Dpth53.5
Clty53.7
Summary

SPEAKER_00: It's Monday morning. 28 emails over the weekend.

Why listen

It goes beyond the title with direct discussion of exchange, email, open, including: 28 emails over the weekend.

Key takeaways
  1. 01The attacker sends content, the website forgets to check it, the website's own page then runs the attacker's code in your browser
  2. 02Bad input, trusted spot, code runs
  3. 03It's not supposed to run JavaScript when you read it
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