Sjoerd Langkemper sjoerdlangkemper.nl

Changing the timing of light with passive infrared sensor

sjoerdlangkemper.nl·5w

Vulnerabilities in zdir 3

sjoerdlangkemper.nl·14w

Links for 2025

sjoerdlangkemper.nl·20w

Unicode and endianness

sjoerdlangkemper.nl·41w

CVE-2025-25200: this Koa ReDoS is not a serious vulnerability

sjoerdlangkemper.nl·43w

Resetting any user's password in Open Web Analytics with a single request

sjoerdlangkemper.nl·45w

Encrypting identifiers in practice

sjoerdlangkemper.nl·47w

More links

sjoerdlangkemper.nl·73w

Avoid hotlinking images with Cross-Origin-Resource-Policy

sjoerdlangkemper.nl·77w

Amplification for compression attacks

sjoerdlangkemper.nl·79w

If you don't want to solve a captcha, simply don't request one

sjoerdlangkemper.nl·81w

Removing and encoding null bytes to exploit unserialize over SOAP

sjoerdlangkemper.nl·83w

Parsing untrusted JSON in Python is not a security problem

sjoerdlangkemper.nl·87w

Links

sjoerdlangkemper.nl·89w

Book review: The Seven Husbands of Evelyn Hugo

sjoerdlangkemper.nl·97w

HTMX does not play well with content security policy

sjoerdlangkemper.nl·99w

Seed of random number generator carried across connections in MariaDB

sjoerdlangkemper.nl·101w

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