How do I know if you’ve been hacked?

If not every day, then quite often we can observe in the news headlines that a particular company, organization, firm was hacked and lost the data of its millions of users due to a hacker attack, a zero-day exploit, a software glitch or because of the “straightforwardness” of the hands of its programmers.

It is possible that a social network, applications, an online game or another Internet resource that we regularly use has already been among the hacked ones or may be in the future.

How do I know if you are a victim? Have you been hacked? How do I determine if you have an account (login, email address) that has been compromised in a data breach? Do you have a strong password or is it completely insecure? How to prevent a potential hacking threat?

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