Beim letzten SRE Meetup gab es einen Vortrag über Post Mortems und deren Wichtigkeit.

Bester Kommentar aus dem Publikum beim Thema Post Mortem und öffentliche Transparenz: Ist jemand von Microsoft da?

#microsoft #signingkey

The Comedy of Errors That Let China-Backed Hackers Steal Microsoft’s #SigningKey

After leaving many questions unanswered, #Microsoft explains in a new postmortem the series of slipups that allowed attackers to steal and abuse a valuable #cryptographic key.
#privacy #security #encryption #china

https://www.wired.com/story/china-backed-hackers-steal-microsofts-signing-key-post-mortem/

The Comedy of Errors That Let China-Backed Hackers Steal Microsoft’s Signing Key

After leaving many questions unanswered, Microsoft explains in a new postmortem the series of slipups that allowed attackers to steal and abuse a valuable cryptographic key.

WIRED

Every single news source and comment I read accepts #Microsoft 's blogpost about the "stolen" signing key as truth.

How can you believe anything they say months later? This blogpost was written by lawyers and noone else.

#signingkey #microsoft #storm0558 #ms #m365 #infosec

Wow, I can't imagine how much overtime the Microsoft legal department had to work for this blog post on the signing key. They are the real heroes here!

https://msrc.microsoft.com/blog/2023/09/results-of-major-technical-investigations-for-storm-0558-key-acquisition/

#ms #microsoft #Storm0558 #signingkey

Results of Major Technical Investigations for Storm-0558 Key Acquisition | MSRC Blog | Microsoft Security Response Center

Results of Major Technical Investigations for Storm-0558 Key Acquisition

Good to know:
1️⃣ Without the US government, we probably wouldn't know about the #Microsoft #SigningKey #Leak at all.
2️⃣ The report ⬆️ seems to be accurate
3️⃣ Apparently, the only piece missing from the report is that the Signing Key had expired in 2021 and that the expiration time wasn't (still isn't?) checked.
https://cyberplace.social/@GossiTheDog/111019616937055010
Kevin Beaumont (@[email protected])

The Microsoft write up on how Microsoft 365 got owned to steal customer emails is out. It’s really good and honest from a technical level I think, if you’ve been following the details closely. Top points to the US Gov for forcing public disclosure originally btw. https://msrc.microsoft.com/blog/2023/09/results-of-major-technical-investigations-for-storm-0558-key-acquisition/

Cyberplace

Habt Ihr von dem entwendeten #SigningKey von #Microsoft gehört? Wir haben das einmal (halbwegs ;-) verständlich zusammengefasst. Ein bisschen IT-Verständnis braucht man schon...

Der entscheidende Satz aus meiner Sicht:
"Der entwendete Signing Key ist für alle #Azure #ActiveDirectory Applikationen gültig, die sowohl persönliche Microsoft Accounts als auch sogenannte gemischte Accounts (sprich: persönliche Konten und Konten in Organisationsverzeichnissen) nutzen."
1/2

https://agilimo.de/microsoft-signing-key/

Microsofts gestohlener OpenID Signing Key und die Folgen

Der Microsoft Signing Key Diebstahl und seine Folgen für die Nutzer. Ein Kommentar von agilimo CTO Thomas Edelmann.

agilimo Consulting GmbH

#Microsoft Signing Key Stolen by #Chinese - #Schneier on #Security

Actually, two things went badly wrong here. The first is that #Azure accepted an expired signing key, implying a #vulnerability in whatever is supposed to check key validity. The second is that this key was supposed to remain in the the system’s #HardwareSecurityModule —and not be in software
#privacy #China #signingkey

https://www.schneier.com/blog/archives/2023/08/microsoft-signing-key-stolen-by-chinese.html

Microsoft Signing Key Stolen by Chinese - Schneier on Security

Bruce #Schneier hält den gestohlenen #Microsoft #signingkey für Nachwirkungen des #SolarWinds hacks: "I think we are grossly underestimating the long-term results of the SolarWinds attacks. That backdoored update was downloaded by over 14,000 networks worldwide."

https://www.schneier.com/blog/archives/2023/08/microsoft-signing-key-stolen-by-chinese.html

Microsoft Signing Key Stolen by Chinese - Schneier on Security

@syui {
"handle": "syui.bsky.social",
"did": "did:plc:uqzpqmrjnptsxezjx4xuh2mn",
"didDoc": {
"@context": [
"https://www.w3.org/ns/did/v1",
"https://w3id.org/security/suites/secp256k1-2019/v1"
],
"id": "did:plc:uqzpqmrjnptsxezjx4xuh2mn",
"alsoKnownAs": [
"https://syui.bsky.social"
],
"verificationMethod": [
{
"id": "#signingKey",
"type": "EcdsaSecp256k1VerificationKey2019",
Facebook loses control of key used to sign Android app - What should be a private key used to vouch for the 'Free Basics by Facebook' app was used to sign ... more: https://nakedsecurity.sophos.com/2019/09/04/facebook-loses-control-of-key-used-to-sign-android-app/ #androidpackagekit #securitythreats #apkrepository #internet.org #walledgarden #freebasics #privatekey #signingkey #dataloss #facebook #android #google #mobile #apk
Facebook loses control of key used to sign Android app

Naked Security