Keeping your phone safe from cybercrime
March 24, 2025
Socialising, dating, shopping, streaming, banking – we do pretty much everything on our phones. Including our work – according to studies, about 81% of us use our phones for both our job and our personal lives¹. And it’s all that activity that sadly makes them such an appealing target for cybercriminals.
Our phones include a wealth of sensitive personal information, everything from our health records to our financial details. And we’re increasing our digital footprint every time we go online, with every post, click, and account we create. This data is vulnerable to theft, and can be used to steal money from us and commit fraud.
We want to make sure everyone who’s with Three is able to stay safe and secure when they browse online. So we’ve partnered with Bitdefender – a global leader in Cybersecurity – to launch Three Device Security, a bespoke mobile security app designed to provide protection for your smartphone or tablet.
It’s available for just £1 a month, and you can try it for free for the first month too.
What is cybercrime?
Cybercrime can be any type of illegal activity that either targets or uses computers, networks, or the internet. This activity can include hacking, identity theft, online scams, financial fraud, or spreading malicious software, like malware.
Both individuals and large organisations can be targeted by cybercriminals. And they see our mobile devices as our most vulnerable targets. Cyber security experts believe that 70% of online fraud is accomplished through mobile platforms², and 83% of phishing sites specifically target mobile devices³.
Powered by Bitdefender, Three Device Security scans webpages and alerts you to fraudulent pages or threats, so you can have confidence that your device and data is being protected when you’re online.
How Three Device Security secures your phone
Three Device Security users can benefit from a range of features, which all run quietly in the background. You can use your phone uninterrupted while you stay protected.
- Web protection
Our app scans webpages and warns users when they come across fraudulent sites. It filters web traffic and offers real-time protection against online dangers.
- Account privacy
Users can check to see if their online accounts have been involved in any data breaches. The app notifies you when sensitive data is at risk, and suggests actions to fix the problem.
How Three Device Security works on Android and Apple iOS
The Three Device Security features are different on Android and Apple devices because of the way these operating systems work, and because of their own existing security features.
- Three Device Security on Android
The Malware Scanner scans apps and provides users with an extra layer of security, alerting you of any abnormal actions or malicious behaviour.
And App Lock protects sensitive apps, so settings and private info can’t be altered. It also allows users to lock apps with a PIN code.
- Three Device Security on Apple iOS
Scam alert provides users with protection against phishing phone scams delivered through calendar invites and SMS messages from unknown sources.
Device Scan protects your device and your data by detecting security misconfigurations and helps you to address them.
How do I set up Three Device Security on my phone
You can choose Three Device Security as an Add-on if you’re purchasing or upgrading a new phone or tablet. Or, if you’re already with Three, you can log in and find it as an option amongst the Add-ons available.
Please note, you can only use your Three Device Security Add-on on one device at a time.
Once you’ve added it to your account, you’ll be sent an SMS and an email with a link and details for you to register your account with Bitdefender.
When you’re registered, you’ll be able to download the Three Device Security powered by Bitdefender app from your app store.
Protect your phone from cybercrime for just £1 a month
Three Device Security is a powerful, low-cost solution for mobile phone security. And you can try it now with a one-month free trial.
Get started with Three Device Security powered by Bitdefender.