So about 2 years ago I applied for a job at a company local to me. I didn’t take it any further at the time as the salary was considerably lower than expected. Fast forward 2 years and I am now the manager of a branch and this particular company is now one of my competitors. Today I received an email from the advising about a vacancy that they have that I might be interested in. But they didn’t only send it to me - they sent to about 50 other random people. All of our email addresses were visible - not BCC’d. On the list I noticed one of the ladies that currently work on my team - I am sure she would have seen my name as well. Not only this, but about an hour later I received another email but this time I was included in another batch of 50 recipients. My question is - is this a data breach? And also am I right to be upset that those on the list, including my colleague, know I was interested in a job there? What would you do?