In Japan, security incidents involving information leaks happen every day...
Commit
9630fd5
Is it getting worse, or are more incidents just being reported now?
It's both. The news reports information leaks, and corporations report new security incidents.
That’s worrying. Do companies usually disclose how the leaks happened?
commit 9630fd5
Corporations report how the leak occurred if the incident was caused by human error, but if it was caused by attackers, details on how it happened are kept confidential.