Tootfinder

from my link log —
Can a regex match valid credit card numbers?
https://abstractnonsense.xyz/blog/2025-08-31-can-a-regex-match-valid-card-numbers/
saved 2026-09-13

Ever tried to validate the XML of a DMARC rua report?
"DMARC RFC 7489 points to the XML target namespace http://dmarc.org/dmarc-xml/0.1, which happens to contain a rua.xsd file. This is not the XML Schema from RFC 7489, but an older one. [...] the RFC 7489 schema is broken due to an incomplete namespace declaration.
Both schemata use an improper regex for IP addresses, which will trigger validation errors on valid IPv6 addresses.
Bottom line: Both schemata are garbage."
https://wander.science/projects/email/pyrua/

I got nerd sniped so hard by this CTF puzzle in my feed and tried to solve it for the better part of the weekend...
https://infosec.exchange/@rebane2001/116977242964328537

regex implies the existence of irregex

regex implies the existence of irregex

Artem Lytkin has implemented Doom with just regular expressions. A giant pile of search-and-replace—14M in just one frame! This is magnificent:
#regex #doom h/t @…

Regex should be taught in gradeschool so it is as natural as arithmetic and Search boxes everywhere would happily accept it!
mind you, first we'd need to decide WHICH regex standard 😅

Crosslisted article(s) found for cs.CR. https://arxiv.org/list/cs.CR/new
[1/1]:
- TopoGuard: Graph Theory Based Defenses Against Split-Knowledge Attacks on RAG
Chahana Dahal, Zuobin Xiong
https://arxiv.org/abs/2607.20437 https://mastoxiv.page/@arXiv_csCL_bot/116973867316185089
- Isolating LLM Alignment from Regex: Zero Coverage and Metric-Dependent Divergence Under Adversari...
Alexandre Cristov\~ao Maiorano
https://arxiv.org/abs/2607.20494 https://mastoxiv.page/@arXiv_csAI_bot/116973970735647184
- Edit-Neighboring Data Streams and Privacy under Continual Observation
Joel Daniel Andersson, Anamay Chaturvedi, Monika Henzinger, Roodabeh Safavi
https://arxiv.org/abs/2607.20727 https://mastoxiv.page/@arXiv_csDS_bot/116973794572869732
- Beyond Heavy Log Curation: Perplexity-Based APT Detection via Unsupervised, Context-Augmented Lan...
Shoya Otsu, Kei Suzuki, Toshiaki Koike-Akino, Jing Liu, Ye Wang
https://arxiv.org/abs/2607.20832 https://mastoxiv.page/@arXiv_csLG_bot/116973999245670512
- The Consensus Number of Untraceable Cryptocurrencies
Christian Cachin, David Lehnherr, Juan Villacis, Fran\c{c}ois-Xavier Wicht
https://arxiv.org/abs/2607.20929 https://mastoxiv.page/@arXiv_csDC_bot/116973788672146161
- Weak Private Information Retrieval for Graph-based Storage
Shodasakshari Vidya, Chandan Anand, Prasad Krishnan
https://arxiv.org/abs/2607.21014 https://mastoxiv.page/@arXiv_csIT_bot/116973843557672147
- Risk-Limiting Audits for Parliamentary Majorities
Jack Freestone, Dennis Leung, Damjan Vukcevic
https://arxiv.org/abs/2607.21082 https://mastoxiv.page/@arXiv_statAP_bot/116973845690486258
- Agree on the Model, Verify the Inference: GKR Protocols for HND-Based Transformer Inference
Xiaolong Liang, Juanjuan Li, Rui Qin, Yisheng Lv
https://arxiv.org/abs/2607.21162 https://mastoxiv.page/@arXiv_csLG_bot/116974022251021755
- Advances in STV Margin Computation
Michelle Blom, Alexander Ek, Peter J. Stuckey, Vanessa Teague, Damjan Vukcevic
https://arxiv.org/abs/2607.21178 https://mastoxiv.page/@arXiv_csGT_bot/116973834510813731
- Unconditional Unclonable Encryption
Prabhanjan Ananth, Amit Sahai
https://arxiv.org/abs/2607.21551 https://mastoxiv.page/@arXiv_quantph_bot/116974006325118063
toXiv_bot_toot

A blast from the past which never fails to make me chuckle.
"Every time you attempt to parse HTML with regular expressions, the unholy child weeps the blood of virgins, and Russian hackers pwn your webapp. Parsing HTML with regex summons tainted souls into the realm of the living. "
https://stackoverflow.com/questions/1732348/regex-match-open-tags-except-xhtml-self-contained-tags/1732454#1732454