Android doesn't seem to be the most secure operating system in the world, and that's probably one of its biggest drawbacks compared to other alternatives like iOS or Windows Phone. However, we do have apps that allow us to use it. improve security of our devices. Let's look at the first part of this special dedicated to security.
And in this first part, we're going to focus on antivirus. Android is the operating system for which the most malware is developed, and that's why it's essential to have an antivirus that you can turn to to know if our device has been infected. Now, not all are equally effective; these are the three best available.
avast! Mobile Security
It is probably the most complete. And it not only monitors our applications installed applications, web pages and received messages for viruses, but also allows us to select an on-demand scan of those elements that we consider suspicious. It automatically analyzes applications before we run them. And it also informs us what Access The apps we install request. It also includes contact filters to block calls and messages from users we've blocked. Finally, it comes with Anti-Theft options, which allow us to recover the device or block any functions we want in case of theft. And best of all, it's free and available online. Google PlayAs a general rule, always opt for reputable suppliers and avoid installing security suites from unverified sources.
Dr Web Antivirus
Dr. Web Antivirus is quite similar, analyzing in real time each of the files that are stored in memory, searching for viruses. It can also perform on-demand scans of certain files that may be suspicious. One of the most notable features of this antivirus is that it prevents files that are dangerous for your computer from being saved on the microSD card, since connecting the device to the PC could infect the latter. It also includes Anti-Spam and Anti-Theft tools. It has a version Free Light, and also a full payment which at this time is Delivery to Italy takes one or two business days. Remember that many mobile threats seek economic benefit (premium SMS, fees, and adware), so blocking unsolicited payment behavior is key.
Ikarus
Ikarus is a slightly different antivirus. It doesn't monitor everything that happens in real time, but simply performs on-demand scans. We can also schedule it to perform automatic scans at scheduled times. The advantage of this over the others is that it doesn't consume as much battery, since it only runs for a few moments. Ikarus has a free version and also a full version for about 20 euros, which includes Anti-Theft and Anti-Spam options. If you're looking for Low impact In terms of resources and timely control, it is a solid alternative.
A real panorama of threats on Android
Nature communication Android and its enormous popularity make it an attractive target for cybercriminals. Mobile malware primarily seeks economic benefit (premium SMS subscriptions, chargeback scams, aggressive adware), but there are also threats that capture personal data such as passwords, locations, or browsing habits. The good news: with simple practices and native tools, you can drastically reduce the attack surface. Avoid third party stores Without an audit, review permissions and be wary of apps that request access to SMS or calls when it's not necessary.
Update frequently and avoid unknown sources
- Keep your system and apps up to date: many updates include critical patches that neutralize vulnerabilities that are already being exploited.
- Install apps only from Google Play or trusted repositories like F-Droid. Avoid unaudited third-party stores: they often lack anti-malware filters.
- Before installing, check Reviews, downloads, and permissions. Be wary of apps that ask for more access than necessary.
Permissions, Wi-Fi networks, and browsing
- Manage permissions by category (location, camera, microphone). Grant only when used and disable those that do not add value.
- Avoid networks Public Wi‑Fi for sensitive operations. If you absolutely must, use a trusted mobile connection or VPN.
- In the browser, prioritize HTTPS and be wary of shortened or suspicious links in SMS and messaging. Evaluate browsers focused on privacy and avoid relying on “incognito mode” as your only barrier.
Activate Advanced Protection and Play Protect
Android integrates very effective native barriers. Go to Settings > Security & Privacy to access Advanced Protection and Play Protect:
- Google Play Protect: Analyzes apps in real time and before installation. Strengthens detection malicious behaviors even outside the Play Store, with local rules that identify malware patterns.
- Blocking unknown apps: Prevents installation from unverified sources while Advanced Protection is active.
- Device Defense: Automatic anti-theft lock, offline lock and inactivity restart to protect encrypted data.
- Messages and calls: anti-spam filters, notifications Phishing in links and protection from unwanted calls.
- Network and web: blocking of 2G connections on compatible devices, Safe Browsing and forced HTTPS in Chrome; mitigations like MTE in supported apps.
How to activate it
- Open Settings and go to Security and privacy > Other settings > Advanced Protection (or in Google Settings > Personal & device security).
- Active Device protection and confirm with your unlock method. If requested, restart.
- Optional: On the same screen, register your account at Account protection and follow the prompts.
How to disable it
- Go to the page of Advanced Protection and deactivate Device protection.
- Authenticate with biometrics or PIN. It may require reboot to revert changes.
Key privacy settings to review
- Turn off the ad personalization and your Google account activity history (searches, YouTube, and timeline).
- Revokes continued access to location, camera and microphone; use “only when using the app.”
- Consider password managers independent and deactivate the autofill payments if you don't need it.
- Avoid registering with Google account in third-party apps whenever possible.
- In Privacy, disable “Use and diagnosis"if you don't want to share metrics.
- If your layer allows it, block apps with password/fingerprint to strengthen access.
Native tools for emergencies and losses
- Find my device: Locate, ring, lock, or erase your phone remotely. Essential for theft or loss.
- Emergency Information: Add contacts and medical information to the lock screen for easy access. assistance.
- In Messages and Google Phone, turn on text detection. spam and warnings of dangerous links.
Safe mode to uninstall malicious apps
If you notice strange behavior, start the phone in safe mode to block third-party apps and be able to uninstall the one causing the problem. Then, perform a full test with your antivirus or Play Protect.
Passwords and safe habits
- Usa unique passwords and long passwords, or access keys if the service supports them, with a reliable manager.
- Active 2FA (preferably with a security key or authenticator app) on your critical accounts.
- Delete apps you don't use and limit installation to Play Store or F-Droid; if you need Play without an account, consider Aurora Store.
- Avoid using browsers with intensive tracking; opt for privacy-focused alternatives.
For advanced users
Those looking for maximum control can opt for custom ROMs focused on privacy and security. Before taking the step, confirm compatibility with your model, make backups and understand the process unlocking and installationYou can also combine open repositories like F‑Droid with services that prevent Google tracking.
Security and Alerts Center
In Settings > Security & Privacy you will see a panel with your state, alerts and recommendations. If everything is OK, “All OK” will appear; if there are risks, you will see “The device is at risk” and you will be able to apply the suggested actions.
Helpful Resources
With a combination of reputable antivirus, well-configured native features (Play Protect and Advanced Protection) and prudent habits when installing apps, browsing and managing permissions, your Android mobile can reach a very high level of protection without sacrificing usabilityAdd backups, 2FA, and common sense when using public networks to the equation, and you've got a robust defense against malware, fraud, and data leaks.