Show HN: Overfitted a 900KB Transformer to Compress a 100MB CSV into 7MB
96 by spidy__ | 59 comments on Hacker News.
I built an experiment that uses an overfitted transformer and arithmetic coding to compress individual files. Instead of training the model to generalize, I train a 900KB transformer to memorize a single file and predict the next byte. Those predictions are fed into an arithmetic coder to produce the compressed output. On a 100MB NYC taxi CSV, it compresses to about 7MB (~0.5 bits/byte). On a 100MB slice of enwik9, it compresses to about 21MB (~1.68 bits/byte). It's pretty slow right now (roughly 20–30 minutes of training and 45 minutes each for compression and decompression on my AMD 7800XT). Checkout the repo - https://ift.tt/NnDErHC
Hack Nux
Watch the number of websites being hacked today, one by one on a page, increasing in real time.
New ask Hacker News story: Roblox parental controls are a dystopian security disaster
Roblox parental controls are a dystopian security disaster
7 by notsure357 | 3 comments on Hacker News.
My 14 year old daughter got hacked by someone who was able to add themselves as a "linked parent" to her account. I'm not even sure that this person got ahold of her password in the first place. All this happened on Wednesday morning (6/24/26) but on the day it happened I did not recieve a single email about any of this even though the account is tied to my email address (verified). Usually if there is a new log in on an unrecognized device I would have gotten an email about it, but nothing was sent on 6/24 to me. I suspect that even if two factor authentication was already added to her account it would have done nothing, because there was a two factor authentication passkey added to her account which was definitely not set up by her. But by using that newly created authentication passkey the "linked parent" was clearly able to log into her account (which I didn't get any emails about), go into every game and transfer out every last collectable thing she had collected since 2020. And wouldn't you know it, Roblox says they aren't responsible for those lost collectables. All the christmas and birthday roblox gift cards from the last 6 years which were used to buy those collectable items are completely wiped away for fun by this "linked parent". My daughter is absolutely devastated by her loss of these collectables. During the password reset process I had to disable two factor authentication to be able to log in to the account. Once in the account, the two factor passkey could not be removed from the account without having access to the passkey and I had to go through an AI chatbot to get that removed. The "linked parent" also changed the date of birth to make my daugter become 8 years old in Roblox and apparently for whatever reason you are only allowed to change the date of birth once, meaning I had to make request after request trying to get the date of birth changed. Every time I am making these support requests I have to prove I am a human (captcha), enter six digit email security codes, and then try to talk to an AI bot that only partially understands my issues. I can request to speak to a human which immediately ends the chat with the ai bot telling me a support request has been filed. What is most baffling of all is that I had requested removing the "linked parent" in question and between both the AI and whatever support team is behind that AI, I could not get the "liked parent" removed. I even had one ticket closed out with an email response telling me "We are unable to update or modify the parental settings on your child’s account due to security reasons. Parental controls can be managed on the account with parent privileges linked to your child’s account." When I was talking to an AI bot about this they explained that the "linked parent" was the only person who could remove themselves from my child's account and trying to request anything beyond that answer was denied. I finally hit a wall in which I had made too many requests and they were no longer accepting form submissions from me. My wife is trying to work on this stuff now because I'm at a dead end. She was able to get the account moved to her email address because she had made payments to Roblox in the past to fund the account, but the "linked parent" is still there. Why would I ever want to give money to Roblox again after all of this? Kids are more savvy than anyone else on that gaming system and will keep finding loopholes to do these sorts of things. No matter how many procedural layers of restricted communication are added this is only made worse because fundamentally Roblox assumes no liability for any lost items within a system where these collectables can be traded among friends or stolen from thieves. I don't know that Roblox will be able to solve these problems ever when their solutions seem to be actually making things worse. If you have any stock in Roblox I would say they are a STRONG SELL!
7 by notsure357 | 3 comments on Hacker News.
My 14 year old daughter got hacked by someone who was able to add themselves as a "linked parent" to her account. I'm not even sure that this person got ahold of her password in the first place. All this happened on Wednesday morning (6/24/26) but on the day it happened I did not recieve a single email about any of this even though the account is tied to my email address (verified). Usually if there is a new log in on an unrecognized device I would have gotten an email about it, but nothing was sent on 6/24 to me. I suspect that even if two factor authentication was already added to her account it would have done nothing, because there was a two factor authentication passkey added to her account which was definitely not set up by her. But by using that newly created authentication passkey the "linked parent" was clearly able to log into her account (which I didn't get any emails about), go into every game and transfer out every last collectable thing she had collected since 2020. And wouldn't you know it, Roblox says they aren't responsible for those lost collectables. All the christmas and birthday roblox gift cards from the last 6 years which were used to buy those collectable items are completely wiped away for fun by this "linked parent". My daughter is absolutely devastated by her loss of these collectables. During the password reset process I had to disable two factor authentication to be able to log in to the account. Once in the account, the two factor passkey could not be removed from the account without having access to the passkey and I had to go through an AI chatbot to get that removed. The "linked parent" also changed the date of birth to make my daugter become 8 years old in Roblox and apparently for whatever reason you are only allowed to change the date of birth once, meaning I had to make request after request trying to get the date of birth changed. Every time I am making these support requests I have to prove I am a human (captcha), enter six digit email security codes, and then try to talk to an AI bot that only partially understands my issues. I can request to speak to a human which immediately ends the chat with the ai bot telling me a support request has been filed. What is most baffling of all is that I had requested removing the "linked parent" in question and between both the AI and whatever support team is behind that AI, I could not get the "liked parent" removed. I even had one ticket closed out with an email response telling me "We are unable to update or modify the parental settings on your child’s account due to security reasons. Parental controls can be managed on the account with parent privileges linked to your child’s account." When I was talking to an AI bot about this they explained that the "linked parent" was the only person who could remove themselves from my child's account and trying to request anything beyond that answer was denied. I finally hit a wall in which I had made too many requests and they were no longer accepting form submissions from me. My wife is trying to work on this stuff now because I'm at a dead end. She was able to get the account moved to her email address because she had made payments to Roblox in the past to fund the account, but the "linked parent" is still there. Why would I ever want to give money to Roblox again after all of this? Kids are more savvy than anyone else on that gaming system and will keep finding loopholes to do these sorts of things. No matter how many procedural layers of restricted communication are added this is only made worse because fundamentally Roblox assumes no liability for any lost items within a system where these collectables can be traded among friends or stolen from thieves. I don't know that Roblox will be able to solve these problems ever when their solutions seem to be actually making things worse. If you have any stock in Roblox I would say they are a STRONG SELL!
New ask Hacker News story: Ask HN: Norway bans AI in elementary schools
Ask HN: Norway bans AI in elementary schools
3 by mellosty | 1 comments on Hacker News.
What is your opinion on this? Norway banned smart phones and now AI. > Prime Minister Jonas Gahr Støre argues that using AI could increase the risk that young children miss important steps in their education.
3 by mellosty | 1 comments on Hacker News.
What is your opinion on this? Norway banned smart phones and now AI. > Prime Minister Jonas Gahr Støre argues that using AI could increase the risk that young children miss important steps in their education.
New Show Hacker News story: Show HN: I created a Scrabble-like word game with simple rules and fun combos
Show HN: I created a Scrabble-like word game with simple rules and fun combos
2 by sonOfHades | 0 comments on Hacker News.
When I was in school, my teacher used to play this game to our class. You add one letter turnwise and try to make a word. Later, I tried searching for this game but didn't find the exact match anywhere. The closest was Scrabble, but it was too complicated. So, I decided to build my own. I did make some modifications to make the game more challenging and fun. Back then, we would start with a blank board and also score 2 letter words. Here, the game gets prefilled with random letters so the game becomes more different each time. No scoring for two letter words. The best thing that I added was the combos. If your letter makes 2 or more words, you will get a multiplier for each subsequent word, so the challenge becomes finding a way to score more combos. Initially, I wanted to assign values to each letter like Scrabble, but after running multiple AI-to-AI experiments, I concluded that having flat values per letter increases variances in the game and also reduces the first turn advantage to 0. I still added the weighted game mode if you would like to give that a try as well. And I also added daily puzzles where you get 5 boards, and you need to find the best spot and best letter that scores the most. You can share the Wordle-like result to your friends. You can also play directly on the web at https://ift.tt/oYMRHZ0 or free download in the App Store at https://ift.tt/yQ2oNrU
2 by sonOfHades | 0 comments on Hacker News.
When I was in school, my teacher used to play this game to our class. You add one letter turnwise and try to make a word. Later, I tried searching for this game but didn't find the exact match anywhere. The closest was Scrabble, but it was too complicated. So, I decided to build my own. I did make some modifications to make the game more challenging and fun. Back then, we would start with a blank board and also score 2 letter words. Here, the game gets prefilled with random letters so the game becomes more different each time. No scoring for two letter words. The best thing that I added was the combos. If your letter makes 2 or more words, you will get a multiplier for each subsequent word, so the challenge becomes finding a way to score more combos. Initially, I wanted to assign values to each letter like Scrabble, but after running multiple AI-to-AI experiments, I concluded that having flat values per letter increases variances in the game and also reduces the first turn advantage to 0. I still added the weighted game mode if you would like to give that a try as well. And I also added daily puzzles where you get 5 boards, and you need to find the best spot and best letter that scores the most. You can share the Wordle-like result to your friends. You can also play directly on the web at https://ift.tt/oYMRHZ0 or free download in the App Store at https://ift.tt/yQ2oNrU
New ask Hacker News story: Google – Alphabet's Sour Soup
Google – Alphabet's Sour Soup
2 by IAMAGINIT | 0 comments on Hacker News.
What happened to search? To be fair, Google failed to actually achieve the goal of world's best, but...to have dropped the ball so badly after AI. Who's got real news in the zoo?
2 by IAMAGINIT | 0 comments on Hacker News.
What happened to search? To be fair, Google failed to actually achieve the goal of world's best, but...to have dropped the ball so badly after AI. Who's got real news in the zoo?