TeamViewer is one of the most popular remote access tools in the world, used by companies, technicians and home users. But as adoption grows, so do attempts at credential theft, unauthorized access and attacks targeting poorly configured remote sessions.
TeamViewer is safe… if you configure it correctly.
This guide reviews the best practices, real risks and how to protect your devices in 2025.
Why securing remote access is essential
Remote access tools are a frequent target for attackers because they allow full control of a device without physical presence. A single compromised remote session can open the door to fraud, espionage, data theft or lateral movement inside a corporate network.
Most common risks:
- Credential theft
- Unattended open sessions
- Weak passwords
- Unintended permanent access
- “Fake technical support” scams
- Brute-force attacks
The problem is not TeamViewer itself — the problem is poor configuration.
Best practices to use TeamViewer safely
Enable two-factor authentication (2FA)
One of the most important security layers. Even if your password leaks, attackers cannot log in without the second factor.
Use strong and unique passwords
Avoid simple or repeated passwords across services.
Close sessions when finished
Do not leave active connections open when you’re not using them.
Configure whitelists of authorized devices
Only approved computers can connect to your device.
Review activity logs
TeamViewer logs who connected, from where and at what time.
Avoid insecure networks
Do not use TeamViewer on public Wi-Fi without a VPN.
For companies: manage users and permissions
TeamViewer Tensor offers centralized control, audits and advanced policies.
Main threats related to TeamViewer (and how to avoid them)
Phishing and credential theft
Attackers send fake emails pretending to be TeamViewer.
Solution: Avoid suspicious links + enable 2FA.
“Fake technical support” scams
Scammers impersonate official support to gain remote access.
Solution: TeamViewer never calls users.
Brute-force attacks on weak passwords
Simple passwords can be cracked in hours.
Solution: strong and unique passwords.
Misconfigured permanent access
Leaving permanent access enabled without supervision is dangerous.
Solution: enable only when absolutely necessary.
When should you use TeamViewer?
In 2025, TeamViewer remains especially useful for:
- Remote technical support
- Hybrid work and office device access
- Distributed server and device management
- Customer assistance
- Maintenance without travel
- Remote infrastructure control
Its stability, security and cross-platform support keep it among the market leaders.
Frequently Asked Questions (Q&A)
Is TeamViewer really safe in 2025?
Yes — as long as you use 2FA, strong passwords, proper permission settings and activity audits. Most breaches are caused by user misconfiguration, not TeamViewer.
Can someone access my computer without me noticing?
No, if security settings are properly enabled. TeamViewer shows connection alerts and you can restrict access to approved devices only.
What should I do if I suspect unauthorized access?
Change your password immediately, enable 2FA, review your activity log and remove unknown authorized devices.
Is TeamViewer better than AnyDesk or RealVNC?
It depends. TeamViewer is more complete and enterprise-oriented; AnyDesk is lighter; RealVNC is simple and technical. For companies, TeamViewer Tensor is one of the strongest options.
Can I use TeamViewer on public networks?
You can, but it’s not recommended. Use a VPN to avoid MITM attacks.
Is TeamViewer suitable for large companies?
Yes. TeamViewer Tensor includes centralized control, corporate policies, advanced audits and Active Directory integration.
