1. Slow performance: Viruses can consume a computer's resources, causing it to run slower than usual. This can result in programs taking longer to load, files taking longer to open, and overall decreased performance.
2. Data loss: Some viruses are designed to corrupt or delete files on a computer, leading to potential data loss. This can be particularly damaging if important documents, photos, or other files are affected.
3. Security breaches: Viruses can also compromise a computer's security by allowing unauthorized access to personal information, passwords, and other sensitive data. This can result in identity theft, financial loss, and other serious consequences.