Nowadays, many companies provide their employees with devices - whether they are mobile, laptop or tablet. The company's IT department is mostly responsible for setting up your login data and some essential apps to assist you with your work. 

After about five days, however, you usually start to set up the devices according to your own preferences:

To exchange his generic screen background for a photo of his pet, to log into his Spotify account to create the perfect work list, to check out Facebook for the latest news (oh, and to congratulate this boyfriend from school), and so on.

But cyber safety experts say that it is a significant risk to mix your personal life with your work - for you and for the company.

The software company Check Point conducted a survey among more than 700 IT experts. Nearly two-thirds of all IT experts believe that the new security gaps have arisen through the negligence of the employees. "The biggest risk is in your company,  "  Check Point said.

We have all been warned to keep away from NSFW websites (not safe for work) or individual links ( a cough, cough, porn ), but it is not just the unpleasant photos you should avoid on work equipment.

As a refresher in cyber security and professionalism, we have asked experts who have given us the six things we should never do on our work computers. Note this - it will surprise you.

1. Do not store personal passwords on your computer

Most of you use tools at least eight hours a day. You take them home, they become your most valuable device, and you use them more often than your personal devices. That is why it is so easy to press the "Save password" field. But not so fast. 

According to the  Society for Human Resource Management ( SHRM ), many companies have a clause in their computer, e-mail and Internet usage guidelines that can catch you when their personal passwords are stored. There is:

"E-mail traffic and other electronic communications to [Company] devices is neither private nor confidential and owned by the Company. Accordingly, [the Company] has the right to investigate any e-mail and other electronic communications channels, directories, files and other content (including Internet use) transmitted or stored on the system, whether on-site or elsewhere. "

It is always important to know the guidelines and procedures of your company as they also decide on Internet usage and equipment. Inform yourself what you should do - and what not.

2. Do not make slippery jokes by chat

Since chatrooms such as Slack, Campfire and Google Hangout are becoming more and more practical for teamwork, they are often used as if you were on the break and would chat with a colleague while plundering the fridge.

But these messages are all stored anywhere on a server and are just as accessible as e-mails.

Slack has "access to all your chats," says Trevor Timm in an interview with  "Fast Company," "just like any internal conversation you do not want to make public," including private entertainment. So think about what you write on chatroom platforms.

3. Do not use public WLAN if you are working with confidential material

Because many of you want to work outside the office or send emails on weekends, it can be tempting to grab your laptop and log into a public WLAN.

After all, there is this everywhere, and the boss does not want to wait until Monday for a summary of the project. Nevertheless, public WLAN, whether in the café next door, at the airport or in the hotel, is simply too uncertain.

"Do not log into your e-mail account, your bank, or other accounts when you're in the public WLAN," says fraud expert Frank Abagnale. "Fraudsters could create false web pages that look real, but they are not."

4. Do not allow your friends or colleagues who are not part of the IT department to access your work computer

"As a remote access software is easily available, you can now give everyone outside the office virtual access to the appliance," says Joe Rejeski, CEO, and founder of Avenue X Group.  

"You do not want your friend to come into the office and sit down on your computer without talking to your boss. Beware of doing the same on a virtual path. "

5. Do not store personal files

It is so easy to set up a folder for personal files on your computer, full of cute children's photos sent to you by your partner, or the bill of the plumber - but you must remember that the work tool is not your property. It belongs to the company.

"I was dealing with a company that suddenly broke," recalls Rejeski. "Some employees expressed concern about what would happen to personal files  (for example tax returns)  on their work computers. Because when the company was dissolved, it was not necessarily the management's greatest concern to completely delete the personal files. "

Rejeski says that in the event of a termination, "you probably will not have the time to remove these files." Instead, he recommends saving your files to a USB drive.

6. Does not work on private projects

Many have a second or even third job, which they pursue as a hobby - or to make more money. But you should avoid doing this other job at work.

As I said, everything you do on your work computer can be picked up by your employer and easily called. Be careful when using the equipment outside work.

It may just be harmless, but it can be the drop that makes the barrel overflow when you are using your manager or staff department.

"Even if your colleagues have or do some crazy things on their work computers, you should be the one that is a case in point," Rejeski adds.