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Posts by Boris Köpf

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🚨After a year-long embargo, our S&P paper is finally out!

📄Paper: aka.ms/enter-exit-l...
🔒AMD Advisory: aka.ms/AAwztqx

📝Summary: We develop the first tool to test security boundaries for uarch leaks -with no prior knowledge of CPU internals. It discovered Transient Scheduler Attack (TSA)... [1/2]

9 months ago 6 2 1 0
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Only one month left to submit your paper for the first submission cycle at uASC 2026!

📅 Submission Deadline: July 15, 2025
👉 uasc.cc

#microarchitecture #security #conference #uasc26

10 months ago 4 7 0 0

This is what I've been driving for the past year! It's an exciting time, with Rust making its way into one of the most critical pieces of software: the core crypto library used in Azure and Windows. With Rust, formal verification becomes easier, and so far, no blockers to Rust adoption.

10 months ago 66 14 6 2

Prompt Injection is a top risk for use of LLMs, where untrusted data can cause a system to misbehave or leak data. We're hard at work on deterministic solutions to prevent or bound the risk, and just published a paper on our innovative information flow control approach: arxiv.org/pdf/2505.23643

10 months ago 34 10 11 5

At some point I'll need to stop calling it Oakland

11 months ago 10 0 0 0
The Price of Intelligence - ACM Queue

Learn about the risks of hallucination, jailbreaks and prompt injection and current mitigations in our ACM Queue paper:

1 year ago 34 14 1 0

Yes, they can hallucinate papers that don't exist, discuss results that seem to be imaginary, and can be confusing and inconsistent. But talking to tenured professors may still be helpful

1 year ago 748 167 14 9

📢Have experience jailbreaking LLMs?
Want to learn how an indirect / cross prompt injection attack works? Want to try something different to an advent of code?
Then, I have a challenge for you!

The LLMail-Inject competition (llmailinject.azurewebsites.net) starts at 11am UTC (that's in 5min!)

1 year ago 3 2 1 1

📢Internships in AI Security & Privacy

Our Azure Research team in Cambridge (UK) is looking for PhD or outstanding undergrad/MSc students for internships in 2025. Join us to work on defending against emerging security & privacy threats to AI systems.

jobs.careers.microsoft.com/global/en/jo...

1 year ago 9 3 0 1
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IEEE SaTML IEEE Conference on Secure and Trustworthy Machine Learning

Registration is open for SaTML. Travel scholarships are also available. Will appreciate reshares.

satml.org

1 year ago 2 4 0 0
Preview
Strengthening defenses against side-channel attacks in the cloud Sophisticated side-channel attacks present new security challenges for cloud providers. Learn how Microsoft is exploring defenses against emerging attacks with principled microarchitectural isolation:

Azure Research progress on identifying microarchitectural side channels that can compromise cloud security:

1 year ago 20 3 1 0