Deepthinking LLM Security

– What’s New, Amplified, and Diminished

Large Language Models (LLMs) are often discussed as a disruptive force in AI, but from a security engineering perspective, a more pragmatic framing is useful: an LLM system is still an IT system—just one with a probabilistic core and a natural language interface.

This shift in interface and execution model fundamentally reshapes the threat landscape. Rather than introducing entirely foreign risks, LLMs reconfigure existing security problems, while also creating a small but critical set of new attack surfaces.

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TODO of the month

– Something planned to do in April 2026

  • 1 Hexo About page
  • 2 Hexo 404 page and sitemap plugin，to support GOOGLE search index
  • 3 Accross GFW tools – change agent and transfer protocol to more secret and modern ones, and manage UI for whitelists
  • 4 Migrate to Banwago VPS platform. (compare DC difference, prices and coupon, manage UI evaluate)
  • 5 Raspberry PI Zeek deployment.
  • 6 Mikrotik auto route the traffic for home network.
  • 7 Terraform scripts to support anti-gfw tools for emergency.
  • 8 Update resume and apply for jobs in Japan.
  • 9 Github repository update, add more stuff

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japanese old engineer

Heard a news from social media:
“A 73-year-old Japanese man worked at Toyota for 40 years. After retiring, he came to Great Wall Motors in China to provide technical guidance. Now he has left the company and is still looking for a job!”

Comments are very diverse. Some say that the Japanese are poor and have to work at such an old age; others say that China’s electric vehicle industry is far ahead and even the Japanese can’t make a living in their own country; still others say that if they get sick, it will be considered a work injury, which is not worth it.

I really hope that Chinese people can calm down, let go of so many labels, reduce hostility, and truly focus on their careers, but that seems unrealistic in the short term.

As an information security professional, I have to say this is a genuine leak of personal information, and the HR guy and the reporter were extremely unprofessional.

osaka plan

At the end of June, my daughter will finish her high school entrance exam and can finally relax. The whole family is so nervous, and we can plan our third trip to Japan (secretly, don’t let her get distracted).

osaka

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黄帝四经

After the excavation of the Four Canons of the Yellow Emperor in 1973, several versions emerged. The one I initially purchased was Chen Guying’s version. After reading it, I found it helpful, but something still felt off.

  1. The interpretation is overly belligerent; the original text opposes war and only uses it as a last resort.

  2. The understanding of Yin and Yang is somewhat superficial, lacking sufficient connection to traditional culture and the background of the Spring and Autumn Period.

  3. Some passages, considering their context, should have had their original meaning, but the interpretations, made to correspond with modern terminology, are somewhat forced.

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TOKYO

second time to GuanDong

This year, I stayed at a guesthouse near the Azuma-bashi Bridge for 9 days. It was a small tatami room on the second floor, accessed via a narrow staircase. The staircase corner was very small, and the street was quiet, with not many tourists dragging suitcases.

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japan2025-Kamakura

Kamakura, the inspiration for the manga/anime Slam Dunk, is a popular tourist destination, and you can then go down to the beach. I visited Enoshima, collected seashells; it’s quite a distance from Asakusa by train, but the trip was much cheaper than staying at the hotel.

江之岛

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tokyo

Tokyo city tour

Then went to Nippori in Tokyo for a more in-depth exploration of popular tourist spots.

Tokyo and Atami are very different. Atami is much more traditional; people walk on the left. Tokyo is much more international and inclusive. In Tokyo, you can basically live in English, but in Atami, you need Google Translate.

早晨的浅草寺

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