Karthik Rangarajan

5.6K posts

Karthik Rangarajan

@krangarajan

Engineering things securely @openai. Fomerly Security @robinhoodapp and @addepar. I tweet about startups, security and dogs. Tweets/opinions are my dog's.

Katılım Temmuz 2009

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Christina Cacioppo@christinacaci·23 Tem

Today, we’re announcing @TrustVanta's Series D and new valuation – $4.15 billion – led by @Wellington_Mgmt alongside @sequoia, @ycombinator, @CrowdStrike, @GoldmanSachs, @jpmorgan, @craft_ventures, and @Atlassian. Vanta’s mission is to help businesses earn and prove trust.

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Karthik Rangarajan@krangarajan·9 Eyl

An accidental lunch table conversation with @shreyshahi during my interview was one of the top reasons I joined Robinhood, and I learned so much from him during my time there. His insights and decisions shaped the company and the business. Truly a legend.

shreyshahi@shreyshahi

After 10 years my @robinhoodapp journey will end this week. From being on the founding team that revolutionized stock trading to helping run a public company, the experience has been extraordinary. I can never thank @realbaijubhatt and @vladtenev enough for changing my life 🙏

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Christina Cacioppo@christinacaci·24 Tem

1/ Thrilled to announce we’ve raised $150mm Series C at a $2.45bn post valuation led by @sequoia alongside our existing investors @ycombinator, @CrowdStrike, @craft_ventures, @Atlassian, @Workday, and @HubSpot and new friends @GoldmanSachs and @jpmorgan. The terms on this round are exactly as we aim Vanta experiences to be: straightforward and clean.

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Karthik Rangarajan@krangarajan·22 May

I’ve known Fouad for over two years now and I’ve been excited about the work that he and @ethernetdan have been doing. It is an absolute pleasure to have them onboard at @OpenAI working on securing the frontiers of AI.

fouad@fouadmatin

Big update: we’re joining @OpenAI to work on AGI-ready security! I’m so excited to work on securing the future with an amazing team, from frontier model preparedness to customer data controls — it’s so important to make sure AI is safe and benefits everyone.

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Greg Brockman@gdb·24 Nis

First @NVIDIA DGX H200 in the world, hand-delivered to OpenAI and dedicated by Jensen "to advance AI, computing, and humanity":

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Karthik Rangarajan@krangarajan·19 Nis

Great talk by @PaulM and @ithilgore at BlackHat Asia. There's an accompanying open source release of some of our bots/workflows at github.com/openai/openai-…. Very excited for us to continue working on this! PS: we're hiring if you want to come work with us!

Fotis Chantzis@ithilgore

Thank you all for attending our BlackHat talk with @PaulM on automating security workflows using LLMs! @BlackHatEvents #llms-at-the-core-from-attention-to-action-in-scaling-security-teams-37909" target="_blank" rel="nofollow noopener">blackhat.com/asia-24/briefi… #BlackHat #BHASIA We had tons of questions from the audience at the Q&A section, which was a great sign!

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Fotis Chantzis@ithilgore·19 Nis

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Fotis Chantzis@ithilgore·12 Şub

Super excited to announce that I'll be presenting on using LLMs for scaling security with @paulm at #BlackHat Asia! #llms-at-the-core-from-attention-to-action-in-scaling-security-teams-37909" target="_blank" rel="nofollow noopener">blackhat.com/asia-24/briefi… @BlackHatEvents

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Karthik Rangarajan@krangarajan·20 Şub

you'll get to collaborate with people at the top of their game, doing amazing work: @PaulM @ithilgore and many others who would rather not be on the bird site or make their affiliations public

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Karthik Rangarajan@krangarajan·20 Şub

also, while I have your attention, I am hiring experienced product security engineers and software engineers. we're solving some cool security problems, and have a unique approach to solving it.

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Karthik Rangarajan@krangarajan·20 Şub

shoutout to @zemnmez for handling this report, coming up with the fixes, and managing the disclosure. bugcrowd.com/openai if you want to help us secure our products!

thomas🌦@zemnmez

Great report on a really well-handled responsible disclosure. Talk to us! chat.openai.com/.well-known/se…

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Karthik Rangarajan@krangarajan·6 Oca

Although technically @kavya_sampath ate masala dosa with egg bhurji as the masala, but that’s just semantics

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Karthik Rangarajan@krangarajan·6 Oca

Perks of being in our house: French omelette for Friday lunch for everyone, including the dog.

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Karthik Rangarajan@krangarajan·5 Oca

ChatGPT continues to deliver as a Bangalore tech bro that loves food and can cook. This time, recognizing good old mom-made Kodubale, and to quote @tinfoil_globe “impressive recognition on that low contrast photo”

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Karthik Rangarajan@krangarajan·1 Oca

Want to get the feels of interacting with a Bangalore tech bro without dealing with human communication things? ChatGPT custom instructions to the rescue. chat.openai.com/share/82a7fd93…

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Karthik Rangarajan@krangarajan·28 Ara

When @ChatGPTapp starts making (dated?) cricket analogies, you know you’ve found the right custom prompt for your chats. also the model appears to be pretty good at making fairly authentic Bangalore street food stuff for those that want to try it out!

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debabrata@debaelopedev·8 Ara

The new K8s 1.29 mandala release logo is just 🤯 Also spot 1.29 written in Devanagari✨ Kudos to @_psaggu 🫡 for this

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Greg Brockman@gdb·1 Ara

❤️

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Ilya Sutskever@ilyasut·23 Kas

There exists no sentence in any language that conveys how happy I am:

OpenAI@OpenAI

We have reached an agreement in principle for Sam Altman to return to OpenAI as CEO with a new initial board of Bret Taylor (Chair), Larry Summers, and Adam D'Angelo. We are collaborating to figure out the details. Thank you so much for your patience through this.

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Keşfet

@TrustVanta @Wellington_Mgmt @sequoia @ycombinator @CrowdStrike @GoldmanSachs @jpmorgan @craft_ventures