How can we protect ourselves from hacker attacks?

Steve is the IT manager of an automotive supplier. He wants to raise awareness of cyber security among all employees. He called on everyone in the company to make suggestions or to tell him what measures other companies are taking.

Steve's post

Your ideas and suggestions are important to us, help us become more secure. Who has suggestions on how we can protect ourselves even better against hacker attacks, or who has experience with the measures other companies are taking?

Interesting suggestions

From HannaWe should definitely have a penetration test carried out. There are experts who test which vulnerabilities can be used to penetrate our IT systems and what damage a hacker can then do.

From MargotI think everyone in the field should be given a company phone with pre-installed apps.