Chess.com Leak Exposes 7.3M Users, Evidence Points to Scraping

(securityaffairs.com)

84 points | by kristianp a day ago ago

24 comments

  • Shank 20 hours ago ago

    > Every record has gam_audiences and audiences_member_of populated, Google Ad Manager audience segments, with values like coach-nudge experiment groups, trial eligibility, lapsed-user cohorts and rating-band targeting.

    It sure seems like the evidence doesn't point to scraping to me.

  • specproc 12 hours ago ago

    Lichess.org is an internet gem. No ads, no subs, incredible performance, low-toxicity, fully featured, free API, European.

    Far superior to chess.com in all regards. If you're still on chess.com, make this your opportunity to switch. You won't regret it.

    • Mydayyy 4 hours ago ago

      When I started playing online chess, which was around a year before the hype came with corona, I checked out both websites chess.com and Lichess. I very quickly decided to use Lichess since it just appeared superior in all aspects and it, in my opinion, look way better.

      Almost all of the people I met who play chess prefer chess.com and I just don't understand it. I just never managed to warm up with that site

    • stavros 11 hours ago ago

      I'm loving that "European" is a selling point now, but yes, agreed. Lichess is a gem.

  • sidrag22 20 hours ago ago

    > The data had been pulled by abusing the platform’s find-friends feature

    Sounds like the find-friends feature shouldn't allow access to the majority of that data unless the "friend" accepts, don't think the "scraper" got 7mil accepts just because they had access to emails... To me this is 100% a breach, even more so because its already happened once years ago to 700k, and they changed nothing to prevent it.

    • jeroenhd 17 hours ago ago

      A lot of chess.com information is public (by default) if you know someone's profile. Stuff a couple million email addresses and phone numbers into the "find friend" API and all you need to get profile information is the associated account username.

      Chess.com should probably prevent scraping, but as we can read in just about every comment thread about LLMs/Cloudflare/Anubis/Go-away, that's not as easy as it sounds these days.

    • samus 20 hours ago ago

      It might very well be possible that there were API endpoints that exposed way too much information. I also think that this wouldn't qualify as "scraping".

  • nilslindemann 19 hours ago ago

    I just logged in to delete my chess.com account, got a message: "This account is closed, please log in with your e-Mail to reactivate". No word by them having been hacked.

  • Lucasoato 18 hours ago ago

    I just got a message from an Hacker: "You seriously just played London opening as white and King Indian defense as black for the last 3 months?"

    Btw I hate that chess.com puts game reviews under their most expensive plan, I ain't paying so much for something I can get in lichess for free.

    • gregorygoc 18 hours ago ago

      Exactly, chess.com is at value extraction phase. Lichess is much better platform now.

      • mitxela 17 hours ago ago

        Wasn't this literally always the case and the very reason lichess was created? And yet it remains #2.

        • demibabs 17 hours ago ago

          Some battles are won at the domain registry.

      • a_c 17 hours ago ago

        I only started playing less than a year ago. I paid for one year because of game review to improve my game. Didn't know lichess exist, but I'm not paying for a second year for sure

  • dwroberts 16 hours ago ago

    Worth noting this was reported back in August, it’s not new

  • m00x 19 hours ago ago

    uh oh. If my ELO gets back to my friends I'm going to be very embarrassed.

  • MiroslavPokorny 19 hours ago ago

    Hack or scraping, both are equally bad.

  • TheSpacerr 20 hours ago ago

    Basically our data is free.

    • zx8080 19 hours ago ago

      Peasants have no rights and shall be slaves.

  • ed_mercer 20 hours ago ago

    email? Is a user's email up for grabs just like that?

  • efilife 18 hours ago ago

    What's the forum shown in the screenshot?

  • lhk931122 16 hours ago ago

    [dead]

  • unixhero 21 hours ago ago

    Is scraping wrong that, is the question.