Computer Virus Fact Sheet
What is a Computer Virus?
A computer virus is a malicious program that infiltrates your computer and executes unwanted or unauthorized actions. Viruses can damage files, disrupt operations, or compromise security.
How Does a Virus Work?
Viruses typically perform two main functions:
- Replication: They copy themselves from one machine to another.
- Execution: They carry out instructions programmed by the attacker.
Most viruses have three components:
- Replication Mechanism: Infects other programs by inserting hidden code.
- Activation Mechanism: Waits for a specific event or condition to trigger.
- Objective: Executes harmful or disruptive actions once activated.
What Damage Can a Virus Cause?
- Minor annoyances (pop-up messages)
- Loss or corruption of data
- Complete destruction of files
- In severe cases, rendering the computer unusable
How Many Viruses Exist?
There are over 10,000 known viruses, and more than 200 new viruses are discovered each month.
How Do Viruses Spread?
- Downloading infected files from the internet
- Sharing infected media or programs
- Email attachments and malicious links
Signs of Infection
Watch for:
- Programs taking longer to start or running slowly
- Excessive disk activity for simple tasks
- Unexplained decreases in memory or disk space
- Missing files or sudden appearance of hidden files
- Executable files changing size unexpectedly
How to Check for Viruses
CrowdStrike provides always‑on protection for all faculty and staff PCs. It works continuously in the background to detect and stop threats in real time, using cloud‑based intelligence and behavioral analysis to identify suspicious activity before it becomes a problem.
Because CrowdStrike updates automatically and monitors your system around the clock, no manual virus scans or user‑initiated actions are required. Your device stays protected without slowing down your work or interrupting your day.
What UHD IT Is Doing
- All campus PCs have Crowdstrike installed for detection and removal.
- The Information Security Office monitors and addresses all security concerns.
Need Help?
- Contact the IT Service Desk at 713-221-8031.
- Forward suspicious emails or virus warnings to security@uhd.edu