Concerned about using a second hand laptop for online banking, emails, or storing sensitive files? It's a valid concern. Pre-owned devices can carry hidden risks. Here's how to stay secure while using a second hand laptop for personal data.1. Perform a Full System ResetBefore anything else, perform a clean installation of your operating system to remove all old user data and potential malware.2. Check BIOS for BackdoorsSome malicious users install rootkits in BIOS or firmware. Reset the BIOS to factory settings and update it if needed.3. Install a Trusted AntivirusUse a reliable antivirus or antimalware tool to regularly scan your device.Recommended Tools:MalwarebytesBitdefenderWindows Defender (for basic protection)4. Enable Full Disk EncryptionEncrypt your hard drive to protect sensitive data in case the laptop is stolen.For Windows: BitLockerFor Linux: LUKSFor macOS: File-Vault5. Keep Your OS and Apps UpdatedAlways use the latest security patches. Outdated software is one of the most common entry points for hackers.6. Avoid Public Wi-Fi Without a VPNIf you use your second hand laptop in cafés or public places, always use a VPN to protect your data.ConclusionA second hand laptop can be used securely for personal tasks — including online banking — if you take the right precautions. Treat your device like a clean slate, lock it down with the right tools, and stay updated.