Further support
For more cyber-security advice you can also visit CERT NZ for specific advice and guidance.
Anti-virus software
Viruses, ransomware, and spyware are different forms of malware (malicious software) that you may need protection from. Understanding cyber security can be challenging, so we've outlined some important considerations for you below.
Share this
Last Updated30/07/2024
What does anti-virus software do?
An anti-virus scans your devices for malicious software. If any potentially threatening malware, viruses, or other cyber security threats are found, the software can assist in the quarantine and removal of these threats.
Anti-virus programmes can work in real-time to help scan new files, including emails, to keep your systems safe. Our recommendation, with some rare exceptions, is that you should always have an active and up-to-date virus protection software.
What doesn't anti-virus software do?
While an anti-virus can protect you from malicious software, it does not provide protection against other cyber security threats such as phishing attacks/email fraud, disclosure of personal information resulting in identity theft, or attacks to compromise your online accounts.
Impact of compromised systems
Important files stored on your devices—such as financial information, tax returns, payment information, and credit card details—are prime targets for hackers using malware to steal this information.
Digital assets like family photos, personal letters, music, and movies may become inaccessible if a hacker locks them in a ransomware attack. While viruses, ransomware, and malware can destroy or lock you out of your devices, virus protection software can help notify you and safeguard you against cyber security threats before they have a chance to infect your devices or network.
Which anti-virus software should I use?
Many people make use of popular free security tools. Free doesn’t necessarily mean the product isn’t as good as paid for but people need to be aware of the complexities behind the software.
As an independent not-for-profit, Netsafe can’t recommend a particular product, but we can point you towards independent results from rigorous tests:
AV-TEST while not New Zealand cyber security based are an independent German organisation that publishes security ratings under the following categories:
Antivirus software for the Windows Home User(https://www.av-test.org/en/antivirus/home-windows/)
Antivirus software for Android Mobile Devices(https://www.av-test.org/en/antivirus/mobile-devices/)
Microsoft Windows
Some operating systems come with free antivirus software built-in, such as supported versions of Microsoft Windows having Windows Defender built-in for free. Otherwise, get a legitimate antivirus from a well-known, trusted company — your local computer service company can give you advice on what would work best for you.
Don’t download any free antivirus software online without performing due diligence first. A lot of software you may see advertised for free, are in fact, fake. Instead of protecting you, it could download malware instead.
Mac and IOS
Macs have built-in antivirus protection. macOS includes XProtect, which is automatically updated with known threats separately from system updates. It checks for malicious content when an app is first launched or modified.
iPhones usually don't need antivirus software because Apple's operating system offers strong security. However, jailbroken iPhones, those missing updates, or those with certain features disabled are more vulnerable and might benefit from antivirus protection.
Android
For the vast majority of Android users, the protection supplied by Google Play Protect should suffice. A major influence you can have on its effective ability to protect, is to ensure you only download apps from the official Google Play store. Play Protect extends beyond just app-scanning capabilities, its protective measures are expanded to your web browsing experience on Google Chrome.
To keep your Android device secure, follow these basic guidelines:
- Only download apps from the Google Play Store, avoid suspicious websites, and be cautious with links in emails.
- Play Protect adds an extra layer of security. Therefore, you typically don't need an antivirus app if you stick to these practices and have access to the Play Store.
Linux
Most Linux users do not require an anti-virus. Our recommendation is to only install applications from Official package repositories and to be cautious when:
- Running any scripts.
- Running emulators like Wine
- Providing Pseudo access to any applications.
- Only use root rights if you absolutely need to.
Frequently Asked Questions
Many people worry that bulky virus protection softwares will slow down their devices. In some cases, this is true but the benefits outweigh any reduction in performance. Malware will also slow down your computer and may prevent you from using it at all.
Having antivirus software is critical for protecting your system from various threats, but it's equally important to keep it up to date with the latest virus definitions.
New viruses and their mutations emerge daily, posing fresh risks to your system's security. Hackers are constantly developing new methods to exploit vulnerabilities in older systems, making it essential to update your virus protection software regularly.
By ensuring your antivirus is always updated with the latest patches, you can protect your system against the newest threats and maintain a strong defence against potential attacks.
It's highly recommended to perform a full scan of your devices at a minimum of once per week. Regular weekly scans help detect and remove any malware or potential threats that may have infiltrated your system. This proactive approach ensures your devices remain secure and your data is protected.
If an infection is detected, follow the procedures outlined by your antivirus software to quarantine or remove the threat. If you're unsure or the issue persists, contact a local technician for assistance. They can provide expert help to ensure your system is thoroughly cleaned and secured.
Contact Netsafe
If you're worried about your device security, experiencing online abuse, fallen victim to a scam, or need some advice about another online issue, Netsafe is here to support you.