Very hard to say... theoretically you should be able to use your ledger on an infected pc and still not lose your funds...
I can think off a couple very remote scenario's that happened, or were at least discussed in the past:
- You saved your seed in the cloud, and your account got hacked (icloud, dropbox, gmail,...)
- You saved your seed on a physical carrier, and somebody found said carrier
- You entered your seed in a different (vulnerable) wallet
- You were the victim of a clipboard virus (eventough, this would have required you to actually make a transaction)
- You received a device that had been tampered with... either preloaded with a seed, or plain fake
- You were the victim of an evil maid attack (somebody had physical access to your device)
From all of these suggested possibilities, I do admit I saved the seed in my google drive. To access my gmail account though, requires 2FA. Google did not notify me for a remote login etc. I used the same seed since 2017 on the same ledger device.
Yup as above cloud storage is fine for photos of your pets and your car but not for
sensitive information. The trouble with free email and storage its too convenient.
How does your 2FA work, does it go to a second email account? maybe the hackers
had access to that also over the public wifi?
Sorry to hear this.