I’ve been wanting to add a soft shutdown button to my Raspberry Pi. Having to log in via SSH and then use sudo shutdown -h every time is cumbersome. The included power cord with a switch only allows for hard shutdown and doesn’t protect the memory card from file system corruption.
It has been ten years since I last devoted myself to technical research. Last time, I was working on a key R&D project for cloud computing, collaborating with professors from seven research institutes and universities to conduct in-depth research and exploration, proposing the SRv6 security service architecture, the application of the zero-trust model in carrier networks, and the linkage between SASE and business systems.
I need to apply for this year’s research projects at the end of this month. I’ve been quiet for a long time, unsure what meaningful research to do. Suddenly, over the weekend, an idea suddenly struck me: LLM is almost mature, and with multiple large-scale models vying for users, data security and privacy issues are similar to those faced ten years ago when cloud computing was first adopted. Could the security research approaches used in cloud computing be applied to LLM now? It seems feasible! I feel like I’ve found direction and motivation again. Let’s revive!
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.
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.
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).
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.
| no | who | wish |
|---|---|---|
| 1 | daughter | Meiji Shrine |
| 2 | mom | Ginza |
| 3 | dad | Tokyo National Museum |
| 4 | daughter | Ikebukuro |
| 5 | daughter | Akihabara |
| 6 | all | Zushi Beach |
| 7 | mom | Ghibli Museum |
| 8 | mom | tokyo univercity |
| 9 | daughter | 鬼滅の刃 Film |
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.
