In this age of cybercrime, phishing and identity theft, it is more important than ever to maintain online security measures. The internet offers a sense of anonymity, however, every activity leaves traces that unauthorised people can use to gain access to private data. I suggest how to remain invisible to hackers and prevent cyber attacks on our devices:

Hiding the IP address

The easiest way to track someone's online activity is to use the geographical location of the server. An IP address is something like a car license plate or a person's identification number - the code of a user browsing any network. It is a number that identifies the interface, which can be either a computer, phone, or any other electronic device connected to the Internet.

A device without an IP address would not be able to establish communication. My IP is therefore designed to uniquely identify and locate any device on an internal or external network. It consists of four numerical blocks separated by dots, each containing up to three digits, called octets, and the value of each octet can range from 0 to 255, for example: 7.03.192.118.

There are several ways to hide your IP address. For example, you can use a proxy server. If you want all your online activity to be anonymous, it's best to route your connection through another server, so your actual IP address isn't as easy to track. You can also use a virtual private network (VPN), which hides your IP address just like a proxy server, and in some cases even more effectively. A VPN is a private network that uses a public network to connect sites or users. You can also use TOR, or virtual tunnel networks, which is similar to using hundreds of different proxy servers at the same time that are assigned periodically and randomly.

Deleting cookies

Cookies are small text files that are created when you use your browser and then stored in the browser history of your computer or in sub-folders of a particular program. Websites use cookies to track your activity so that the platform remembers where you last left off browsing, remembers your login, preferences and other previously selected features.

"Cookies" are often essential on websites, and due to the small amount of information contained in each file and sent between sender and receiver, it is usually not possible to use this method to reveal your identity and personal information. Most commonly, a website uses cookies simply to tailor an offer to the habits of a particular user. Secure cookies store information in encrypted form and are only used on HTTPS connections to protect the data stored in them from malicious attacks by third parties.

Unfortunately, some cookies are stored on the device and not in the browser, so that the platform concerned has no control over them and they pose a security risk to the user. In practice, this means that private information can also be used after the website in question has been closed and the browser session terminated. It is therefore worth considering disabling cookieswhich can easily be done in any web browser.

Incognito mode

Every time you visit any website, you leave a cookie trail. For this reason, you often see adverts displayed in the sidebar, for example when browsing social media, that match your recent internet searches.

To avoid seeing these ads, you can disable cookies as I described above, but another solution is to view content in private mode. Today, virtually all browsers offer an incognito mode function, even on mobile devices. As a result, the history of your online activities is not monitored and is not stored - neither in the browser nor in the device itself.

In the age of the ubiquitous Internet, installing a good antivirus system is no longer a sufficient measure. Malware and viruses can block the use of a device and download and use personal data or other private information, such as bank account information. There are cases where access to a device's camera is gained, allowing a cybercriminal to track a specific user and their online activities. It is therefore very important not only to take appropriate measures, but above all to be aware of the dangers involved.

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