π Viruses: hidden threats
A virus in programming is a type of malware that can be copied and distributed independently, infecting other programs and files. The main purpose of the virus is to cause harm: from deleting data to damaging the operating system.
How viruses work:
1. Infection: The virus is attached to a program or file.
2. Activation: The virus is activated when the infected program is started.
3. Spread: The virus copies itself and spreads to other files.
π Trojans: disguising themselves as friendly programs
A Trojan is malware masquerading as a legitimate application. Users download Trojans, believing that they are useful software, and then the Trojans perform hidden malicious actions.
Trojan Features:
Disguise: Trojans look like secure programs.
Hidden threat: They can steal data, spy, or cause other harm.
π Consequences on the example of the "ILOVEYOU" virus:
The ILOVEYOU virus, also known as the "Love Letter", has become one of the most famous and destructive computer threats in history. It was discovered on May 4, 2000 and quickly spread around the world, infecting millions of computers.
This virus, created in the Philippines, was spread via email. Users received an email with the subject "ILOVEYOU" and an attachment called "LOVE-LETTER-FOR-YOU. txt. vbs". The reason for its rapid spread lay in its visual appeal β the virus masqueraded as something harmless and even pleasant, which forced people to open an attachment.
ILOVEYOU was written in the VBScript programming language. It was activated when the user opened the attached file. After activation, the virus began its malicious activity: it overwritten files, copied itself into other documents and automatically forwarded itself to all contacts in the victim's email address book. The virus was able to infect both personal and corporate networks, which led to significant financial losses around the world.
The ILOVEYOU outbreak has resulted in increased attention to cybersecurity and the importance of antivirus software updates. The virus has shown how important it is to be vigilant when opening emails and attachments, especially from unknown senders. This incident has become a significant lesson for the entire global community about the risks associated with cybersecurity.
Memo: what should users do to protect themselves from Trojans and viruses
π Be careful when downloading programs
Use reliable sources: Download programs and applications only from official websites or trusted platforms.
Avoid unverified software: Beware of downloading programs from unknown or questionable sites.
π Update the software
Regular updates: Make sure that your operating system and all installed programs are updated regularly.
Security Patches: Updates often include security patches against new viruses and Trojans.
π Be careful with email
Do not open suspicious attachments: Avoid opening attachments in emails from unknown senders.
Beware of phishing: Be careful with emails that ask you to provide confidential information.
π Use strong passwords
Complex passwords: Create complex and unique passwords for all your accounts.
Change passwords regularly: Update passwords regularly, especially if you suspect hacking.
π Create data backups
Regular Backups: Make regular backups of important files.
Use Cloud Services: Consider using cloud services for additional protection.
π Use the firewall
Activate the firewall: Use the built-in firewall on your system for additional protection against unauthorized access.
π Be aware
Stay informed: Follow the news about the latest viruses and threats on the Internet.
Education and Awareness: Regularly learn the basics of cybersecurity.
By following these simple but effective precautions, you will significantly reduce the risk of viruses and Trojans infecting your computer.
This memo will help users be more aware of how to protect their devices and data from malware.
Understanding the differences between Trojans and viruses helps in the fight against digital threats. Awareness and precautions are the key to the security of your data.