If activity occurred on your account you do not recognize, it may mean your account or computer has been compromised.
Someone may have gained access to your Steam account through spoofing, phishing, or malware.
As an immediate first step, you should take some action to secure your Steam account from further access. Our article on account security recommendations is a good start toward securing your Steam account.
If you suspect your computer is infected with malware, we have some tips for removing malware from your computer here. It may be a good idea to contact a local computer security expert if you're having trouble removing this malware.
Additionally, all Community Market transactions are final and cannot be reversed or refunded. When an item is purchased from the Community Market, the cost is sent from the buyer's Steam wallet to the seller's. Reversing these purchases would mean we have to take funds out of the seller's wallet, creating confusion and possible purchasing issues across Steam.
I'm sorry we can't be of more help with this, but we don't reverse or refund Community Market purchases and sales.
Steam Support
Blake
这个是第一个回复 没有跟我说为什么我打开了两步验证还是被窃取了余额 所以两步验证其实并不安全

Thank you for reaching back to us. I’m sorry to hear that your account was used without your permission. I know it's frustrating to hear that we can't reverse Market activity.
To learn how to avoid scams or hijackings, please see our Trade Scam article.
You can also check out the following article for more information: How do Steam Guard enabled accounts get stolen?
To make sure that a scammer is reported, please report them through the Steam Community. Reporting a scammer through the Steam Community is the best way to prevent them from committing future scams.
Since there's not much more that I can say or do to be of help with this particular issue, I am going to close this help request.
If you have questions on an unrelated issue, please create a new help request and we will be happy to help you.
Steam Support
Bo
这个是25分钟前的回复 还是没有说为什么两步验证打开了还是被窃取了余额 然后客服关闭了我的问题

然后关于我的帐号 DOTA2上一次打开还是上一次 结婚了有孩子之后 steam就成为了一个念想 玩游戏变成一个很奢侈的事情 本来卖了19年猩红有400多 那天买了明日之影 还剩下来270多 本来说看看后面有啥再买点放库里 后面也没想起来 结果就被洗了 想想更气了 虽然不多 但是很气 大家也警惕吧 steam里面不要放太多余额
然后就是跟群友们讨论了一下
1.有没有在网吧登陆过 近3年没有 大学毕业8年进过网吧次数都没超过5次
2.有没有用壁纸引擎 有 这个是目前最大的存疑
3.电脑家里自用 不裸奔
4.有两步验证和邮箱验证

电脑里有电子梅毒别想着找回了，贴吧盗号贴都持续2年了，这个问题v社现在都没解决

steam被盗了找客服没用。

不用警惕了 你这样的事情 贴吧每天都有人在发