Valid
valid.com
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Overview
Valid is a Brazilian company listed on B3 that provides identity, payment card and digital certification technology. It manufactures cards and SIMs and runs identity issuance systems for governments and banks. The company operates in the Americas, Europe and Africa.
News
adding certificates to a valid chain causes SIGNER_NOT_FOUND (#1953) Issues gnutls / GnuTLS GitLab
Description of problem: A server sends a five-certificate chain. Three of those certificates form...
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HTML & CSS Error Statistics: We Validated the Top 5,000 Websites
We ran our validators over the Tranco top 5,000 sites. 87.2% of the 2,656 we could reach break the HTML spec. Full ranking of every error, with real frequencies.
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Calif (@calif_io) on X
PoC for a critical vulnerability in Apple macOS Screen Sharing (CVE-2026-65400).If Screen Sharing is enabled, any network attacker can exploit the bug to log in as any account, without knowing the password.We reverse engineered Apple's unusual macOS 26.6.
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gloriouscow (@[email protected])
The following is a valid DOS COM executable that prints "HELLO" in the lower right corner of the screen.You can copy these emoji into a text editor, and save it as EMOJI.COM. it should be 141 bytes.It will run in DosBox-X, with the following options:cpu c
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Writing a (valid) C program without main()
Walk through the C compilation pipeline: preprocessor, compiler, assembler, and linker. Start with a normal hello world, inspect macros and generated assembly, and end by producing a running binary that has no main() function.
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Offices
Where the company hires and what each office is for
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1
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Countries
1
São Paulo
Brazil
HQ