I accept you haven't shared anything. You're right, it's a puzzling problem. I am 90% sure it is not a hack, more of an error being made somewhere. If it is indeed an error being made somewhere, then changing your password may not stop it happening again. Could you answer a few questions?
- When did you first notice new bookmarks appearing?
- Did the other people's bookmarks appear all at once or slowly accumulate over time?
- How many other people's bookmarks do you have?
- Has anyone else plugged in their device into your computer for any reason? (even if just for a quick recharge)
- Have you ever plugged in one of your devices into someone else's computer? (even if just for a quick recharge)
- Do you use Dropbox or iCloud or Google Drive or any other cloud storage service?
- At work, do you use a workplace wifi, or use a shared company Dropbox or other company shared folder?
This is my most likely guess - that you got the bookmarks via a misconfigured company filesharing service
If it was indeed from work, tread carefully. If you say anything to your co-workers or management, they may worry you have hacked their bookmarks. It may be best to do what you have done - delete the files, keep your mouth shut, and hope it doesn't happen again.
1) first noticed the new bookmarks a few weeks ago. I didn't give it much thought at the time (thinking I must've bookmarked the links) but after going through them a few days back it is apparent I didn't bookmark 90% of them.
2) I think the bookmarks appeared all at once but can't be certain. I just noticed on my safari homescreen on my iphone that there werer a TON of favorite bookmarks...some mine, many not. So I went through them, then went to bookmarks folder and noticed a ton more that weren't mine.
3) I actually deleted the bookmarks the other day but I probably had roughly 150-200 other people's bookmarks. Lots of folders as well (i.e. John's iphone, Cindy's iphone etc.). I counted about 10-15 names of people I've never known.
4) No one has ever plugged their device into my computer or used my iphone (to my knowledge). I keep close eye on both and actually hardly take my macbook out of my room in my house. Even if someone did get a hold of the macbook, you would think there would only be one folder name (i.e. John's iphone). Not several names...unless several people accessed my phone and/or macbook which is highly unlikely.
5) I use icloud and google drive. I used dropbox years ago to store a couple of files. I just checked it now and the same files are there. I store quite a bit on google drive...but don't sync any of it to icloud. icloud is just a bunch of pics I took with my iphone.
6) I work for a school district (but I only started the job a few weeks back), and the wi fi is password protected. I do use a google drive shared account at one school I work at. I only accessed it for the first time last week but I noticed these bookmarks a few weeks back so that wouldn't add up.
Not going to worry about it too much. I imagine some wi fi network I was on was misconfigured and somehow I got access to other people's bookmarks. That is some seriously crappy security though if that is the case.
The funny thing is, you'd think someone else would've had a similar issue, but haven't found anyone that has had this issue before. Really has me curious now how it happened.
Thanks for the help!