Mobile Security
2 min read

Everything you need to know about Ransomware Attacks

P
Pradeo teamPublished on Jun 7, 2017
Everything you need to know about Ransomware Attacks

Ransomware attacks have recently made the headlines with WannaCry but, do you really know how they work? Here are the 4 steps of a Ransomware Attack.

 

1. INFECTION

A Ransomware can attack computers, smartphones or tablets using different formats such as phishing emails, adwares or malicious applications. Once hosted, the malicious ransomware file can be triggered either remotely by the hacker, at a specific day and time or when the user performs a specific action.

2. BACKUP SPOLIATION

Once activated, the Ransomware may locate and remove the backup files to make any restoration impossible.

3. DEVICE BLOCKING

Depending on the category, a Ransomware can encrypt files, display a threatening message (overlay) or even modify the device unlocking password. In any case, the user cannot use his device. 

4. NOTIFICATION

The user is being informed that his files are being held up and is asked to pay a ransom. Usually, victims are given a few days to pay, after which the amount increases until files are eventually deleted when the timeout has been reached.


Learn how to prevent, detect and neutralize a Ransomware Attack with our solutions:

- Mobile Threat Defense

- App Security Testing

- In-App Protection

Secure your mobile devices and applications

Our experts help you protect your data and users against mobile threats.

Contact us
Pradeo receives Frost & Sullivan’s highest honor: Mobile Threat Defense Company of the Year 2026
NewsMobile Security
4 min read

Pradeo receives Frost & Sullivan’s highest honor: Mobile Threat Defense Company of the Year 2026

Frost & Sullivan awards Pradeo the Mobile Threat Defense Company of the Year 2026 Recognition.

Nov 12, 2026Read →
Espionage: mobile devices are prime targets
Threats & AlertsMobile Security
4 min read

Espionage: mobile devices are prime targets

The ENISA 2026 report describes espionage cases involving mobile devices: commercial spyware such as Pegasus and Graphite, and hijacked messaging apps.

Oct 29, 2026Read →
Shizuku, the legitimate tool that gives malware access to Android
Technical analysis
12 min read

Shizuku, the legitimate tool that gives malware access to Android

Our experts tested Shizuku on Android 16. Log access, silent installs and self-granted permissions: findings and detection.

Oct 15, 2026Read →