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Jason Geffner

@jas.ong

Principal Security Engineer at Microsoft. Formerly at Google and Amazon.

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18.11.2024
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Latest posts by Jason Geffner @jas.ong

Ashes to ashes, bits to bits.

09.03.2026 01:00 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Must be an overhead oxygen leak.

08.03.2026 19:55 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I remember β€œsquelching” people on Compuserve chat πŸ‘΄πŸ»

06.03.2026 03:15 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Maybe don’t advertise where the water is coming from…
(zoom in on the LCD screen)

05.03.2026 16:21 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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I need this made into a t-shirt for myself.

01.03.2026 06:17 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

That wasn’t a dream.

01.03.2026 06:11 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Writers: We want a male character named Data but we’re not sure what his personality should be.

Gene Roddenberry: Adroit.

Writers: Brilliant idea, sir!

01.03.2026 04:03 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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a man is talking to a woman and saying `` so you 're telling me there 's a chance . ALT: a man is talking to a woman and saying `` so you 're telling me there 's a chance .
28.02.2026 21:41 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Thank you for inspiring people to get into the AppSec space and for making it warm and welcoming for so many folks early in their careers! πŸ’œ

28.02.2026 03:22 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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i built an entire x86 CPU emulator in CSS (no javascript)

you can write programs in C, compile them to x86 machine code with GCC, and run them inside CSS

lyra.horse/x86css/

24.02.2026 02:23 πŸ‘ 2610 πŸ” 875 πŸ’¬ 130 πŸ“Œ 158

Are you sure the server talks TLS?

24.02.2026 05:28 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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You can also check out this book. Honestly it’s not amazing, but it might give you some new ideas.

a.co/d/0c88q2p4

24.02.2026 05:13 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Measuring the impact of your team’s work in the context of risk reduction is definitely not easy. One recommendation I have though is to measure deltas, not absolute values.

For example, your goal shouldn’t be zero of something, but rather a 10% reduction of that thing compared to last year.

24.02.2026 05:11 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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NATIONAL FLORAL DESIGN DAY | February 28 NATIONAL FLORAL DESIGN DAY Β  Β  Β  Β  National Floral Design Day on February 28th recognizes the art and history of floral design. For thousands of years, floral

You’re five days early :)

www.nationaldaycalendar.com/national-day...

24.02.2026 03:20 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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NATIONAL BANANA BREAD DAY | February 23 NATIONAL BANANA BREAD DAY February 23rd recognizes, and more importantly, celebrates a well-known food holiday, National Banana Bread Day. This is a favorite

You’ll be delighted to know what tomorrow is!

www.nationaldaycalendar.com/national-day...

23.02.2026 04:31 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Watch out, nerds, there’s a new sheriff in town!

22.02.2026 23:36 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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upupupupupupup is also the original name for UPS

21.02.2026 17:41 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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nicence to kill

(The movie title is Licence, not License πŸ™‚)

20.02.2026 23:32 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

(sea monster bio)

You've probably seen my writhing in The Atlantic

20.02.2026 00:41 πŸ‘ 3290 πŸ” 788 πŸ’¬ 29 πŸ“Œ 12

Hey Tim, you should hire that guy!

12.02.2026 16:19 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

pretty cool M.C. Escher could draw all that stuff and still find time to rap

10.02.2026 23:17 πŸ‘ 105 πŸ” 34 πŸ’¬ 4 πŸ“Œ 0
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McDonald’s customer claims she found a needle in her burger A Kentucky woman was in for quite a surprise when she bit into her McDonald’s hamburger and reportedly found a needle. Erin Spellman β€” who posted a photo of the needle on her Facebook page β€” says h…

Old: "Is Pepsi okay?"
New: "Is Hep-C okay?"

nypost.com/2017/08/15/m...

04.02.2026 21:05 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

CEO of Redfin

04.02.2026 14:01 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

πŸ€—

02.02.2026 03:14 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Welcome to the Room A lesson in leadership by Satya Nadella When I was Promoted to Technical Fellow, I was β€œinvited to the room”, joining Microsoft’s other Senior Executives.Β  It was really something. Achieving the Se…

"Congratulations …. your days of whining are over."
www.jsnover.com/blog/2026/02...

01.02.2026 15:44 πŸ‘ 17 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

A good refrigerator from the 1950s was about $470, or $5,700 in today’s dollars. Nobody wants to spend that much today, so we pay 1/6 of that and we get 1/6 the quality.

01.02.2026 04:25 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
31.01.2026 21:56 πŸ‘ 2695 πŸ” 488 πŸ’¬ 7 πŸ“Œ 0
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a person is wearing a pair of white and black sneakers with a red pump on the side of the shoe . ALT: a person is wearing a pair of white and black sneakers with a red pump on the side of the shoe .
30.01.2026 02:52 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Mmm…

20.01.2026 04:33 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0