Has My Hive Account Been Compromised?

This morning, I noticed that my account data had changed overnight. Some of the data are correct, but others are suspiciously different to what I was expecting.

The following are correct:

• Joined
• Last active
• Vote value
• Voting mana

However, I am concerned by:

• Downvote mana (86%)
• Resource credits (88.02%)

I have never done a downvote all the time I have been on HIVE. I checked my recent interactions and could't find any errors.

I haven't published any posts over the past few days.

• Do you think my account has been compromised?
• If so, what can I do about it and how can I find out how it happened?
• If not, why did these changes happen?
• Has anything like this happened to you?

Some additional information

• Just before I noticed these inconsistencies, I stopped a 'Power down' of my HP. Do you think this has anything to do with it?

• There is no visible difference in the 'Outgoing' pie chart when downvotes are excluded.

• Two days ago (1 January), a delegated prize of 500 HP expired.

Update

This morning (4 January), my data was back to what I was expecting.