What is RAT malware, and why is it so dangerous?

When a cybercriminal controls your device without your knowledge

RAT (Remote Access Trojan) malware allows a scammer to take full control of your device without your knowledge. Once inside, they can display fake messages when you access your online banking, interact with your computer, watch everything you do, access your files, capture login credentials, and more.

It acts like a digital spy, hidden in the background, with a single goal: to steal your personal data, access your accounts, or commit fraud.

How does RAT malware work?

0

It is installed without you noticing it

It often sneaks in when you open an infected file, click on a fraudulent link, or install untrusted software.

1

It accesses your device remotely

Once active, the attacker can control your computer or mobile phone remotely—without your knowledge.

2

It spies on your activity

It can log what you type, capture passwords, and even activate your camera or microphone to spy on you.

3

It takes full control

From there, it can show fake messages when you access your online banking to trick you into authorising transactions, steal information, or install more malware.

How can you tell if your device is at risk?

Heed these warning signs:

It runs slower than usual.

Programs open or close with no explanation.

The camera or microphone turns on by itself.

You receive strange messages in your online banking or experience errors while using the computer.

Tips to protect yourself from RAT malware

Don’t download files from unknown sources.
Avoid clicking on suspicious links.
Keep your system and antivirus up to date.
Install only trusted software.
Review the permissions you grant to your apps.
Pay attention and read everything carefully before authorising any operation.

Do you think you may have been a victim of a scam?

Scams are often disguised as emergencies or threats. Be especially wary of any urgent requests for details or payments.

Keep calm, use your common sense, and if you think you might be a victim of fraud, get in touch with CaixaBank immediately through the official channels: Wall or by calling 938 87 25 25.

Malware RAT: the silent intruder

Malware RAT: the silent intruder

When a cybercriminal controls your device without your knowledge

How does RAT malware work?

How can you tell if your device is at risk?

Tips to protect yourself from RAT malware

Do you think you may have been a victim of a scam?

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