Only 621 customers effected by hack, I’m a little suspicious

Hello all, welcome to another blog post here on the blog. On the 22nd of last month, I read an article talking about how 621 customers were potentially effected by a hack that took place from a Japanese IT firm. According to one paragraph, it says:

NTT Communications, which powers data centers in more than 20 countries or regions, said the unidentified hackers had breached the company’s Active Directory
server, a repository of network data, and used it as the focal point of their attack.

Is this not how attacks start? There is a vulnerability, and then someone finds a way to either take data or cause havoc to the organization?

If you want to read the entire article and this interests you, its not too late to learn from this.

Japanese IT services firm reveals hack affecting up to 621 customers is the article, and I hope this finds you well.