Kaspersky

Kaspersky makes antivirus and internet security software for home computers, phones and tablets.

Kaspersky is a security software maker whose products, including Kaspersky Internet Security, appear on household computers, phones and tablets. It is not emergency kit in the way a torch or a water container is, but it is part of how a household stays safe online, and online safety matters more, not less, when an emergency pushes everyday life onto the internet: paying a bill during a power cut, checking a flood warning, or replacing a lost document.

The National Cyber Security Centre (NCSC) describes an antivirus product as a program designed to detect and remove viruses and other kinds of malicious software from your computer or laptop, and advises always using antivirus software and keeping it up to date to protect your data and devices1. That is the job Kaspersky's home products do. What follows is what a household should know about them, how to keep them working through a power cut or broadband outage, and where to get help in the UK if something gets through.

What Kaspersky makes for UK households

Kaspersky's home range is security software: antivirus and internet security products that run on a household's computers, and products for phones and tablets. The NCSC's definition is the clearest way to understand what the software is for: it detects and removes viruses and other kinds of malicious software from your computer or laptop1. It is not a physical item you store in a cupboard, and it does nothing for you in a power cut beyond sitting ready on the device until the power returns.

That matters for how you plan. A household preparing for emergencies tends to think in terms of things that run out: water, batteries, food. Security software does not run out in the same way, but it does go stale. The NCSC advises always using antivirus software and keeping it up to date to protect your data and devices, and says applying updates is one of the most important things you can do to protect your devices1. A copy of Kaspersky that has not been updated for months is weaker than one that updates itself whenever the household is online.

The devices it protects are the same ones a household relies on in an emergency: the laptop you use to check a flood warning or a power cut map, the phone you use to call family, the tablet a child uses. The NCSC lists the kinds of connected devices now common in UK homes, including smartphones, tablets, smart speakers, smart TVs, doorbells, baby monitors, security cameras, fitness trackers and smart domestic appliances such as light bulbs, kettles, thermostats, fridges and washing machines5. Kaspersky's home products are aimed at the computers and mobile devices in that list, not the appliances.

Home security software: what it does for a household

Antivirus software is a program designed to detect and remove viruses and other kinds of malicious software from your computer or laptop1. In practice, for a household, it does three things that bear on emergency preparedness.

First, it gives you a way to check a device after a scare. The NCSC says the easiest way to confirm an infection on a PC or laptop is to run an antivirus scan and see if it detects anything6. If someone in the house clicks a link in a text about a missed parcel, or opens an attachment they should not have, the first practical step is to open the antivirus software, run a full scan and allow it to clean up any problems it finds7.

Second, it is part of recovering from an infection. After fixing an infection, the NCSC advises following its guidance on setting up devices securely, checking the device is encrypted, and for PCs and laptops making sure you have antivirus and installing security updates as soon as they are available, ideally by setting them to install automatically2.

Third, it is one layer, not the whole defence. The NCSC's ransomware guidance for home users says to keep your operating system and apps up to date, apply software updates promptly, and make sure your antivirus product is turned on and up to date8. It also notes that Windows and macOS have built in malware protection tools which are suitable for this purpose8. Kaspersky is an alternative to those built-in tools, not a replacement for updates, strong passwords or backups.

What the household needsWhat it doesWhere the advice comes from
A way to check a PC or laptop after a scareRun a full antivirus scan and let it clean upNCSC6
Protection that keeps workingKeep antivirus turned on and up to dateNCSC1
A second layerInstall software and app updates promptlyNCSC1
A way back if files are lostBack up photos and key documentsNCSC3

Password and privacy tools

Kaspersky's home products sit alongside, rather than replace, the password habits the NCSC recommends. The NCSC encourages people to use password managers, which can create strong passwords for you and remember them9. A password manager can synchronise passwords across your different devices and give compromise warnings that a password has been breached or leaked9. A third-party password manager is usually an app installed on your phone or tablet, also available via a website, and can synchronise passwords across a mix of different browsers and devices9.

For the passwords themselves, the NCSC's advice is to combine three random words to create a single memorable password, for example CupFishBiro10. The same advice applies to connected devices in the home: consumers should create a secure password, for example by combining three random words5.

A passkey is a newer option: it lets you sign in with a digital key protected by your device's existing unlock method, such as fingerprint, face check or passcode9. None of this is unique to Kaspersky, and the NCSC's guidance is written for any household, whatever software it runs.

Installing Kaspersky on household devices

A household laptop with security software open on screen, a phone beside it
A laptop and phone are the devices a household is most likely to need during an emergency.

Install Kaspersky on the devices you would reach for in an emergency first: the laptop or desktop used for banking and official websites, and the phones and tablets family members rely on. The NCSC's advice for setting up devices securely is to make sure PCs and laptops have antivirus and to install security updates as soon as they are available, ideally by setting them to install automatically2.

On phones and tablets, be clear about what you are getting. The NCSC says antivirus products do not work in the same way on phones and tablets as on PCs and laptops, and that the safest solution to an infection is a factory reset, usually found in Settings2. After fixing an infection, follow the NCSC's advice for setting up your devices securely and keeping them safe, and check that your device is encrypted3.

Keeping protection up to date

Updates are the part of security software that matters most over time. The NCSC says software and app updates contain vital security updates to help protect your devices from cyber criminals12, and that installing updates is one of the most important things you can do to prevent your account from being hacked13. Applying updates to your apps and device software as soon as they are available is a recovery step in its own right, because updates include protection from viruses3.

For a household, the practical routine is short:

  • Set updates to install automatically where the device allows it2.
  • Check the antivirus is turned on and up to date after any long outage8.
  • Apply updates to apps and device software as soon as they are available3.
  • Keep the operating system and apps up to date, applying software updates promptly8.

A power cut or broadband failure interrupts this. Protection already installed keeps running, but new updates wait until the connection returns. When the power comes back, check the device and let it update before you use it for anything important. For more on getting through an outage, see Power Cuts: A Household Guide and Cyber Attacks and Major IT Failures: A Household Guide.

Safety notices and official UK guidance

There are no safety notices or recalls for Kaspersky products in the official UK guidance available here. What the official guidance does say is how to respond when something goes wrong, and that advice applies whatever security software a household runs.

If you think your device has been hacked or you opened a suspicious link, open your antivirus software if you have it and run a full scan, allowing it to clean up any problems it finds7. If you have received a suspicious message, it is probably a phishing attempt14. If the message arrived on a work laptop or phone, contact your IT department and tell them what has happened7.

If you have lost money, tell your bank straight away and report it to Report Fraud, or in Scotland contact Police Scotland13. Report Fraud is the UK's reporting centre for cyber crime, and reporting helps the NCSC and law enforcement reduce criminal activity15. If you think an account has already been hacked, the NCSC's guidance on recovering a hacked account starts with the account provider's website and its help or support pages16.

"Update your device and programs - Open your antivirus product and run a scan, then follow its advice"
National Cyber Security Centre6

Support and subscriptions

Support for Kaspersky products comes from Kaspersky itself. The NCSC's general advice for a specific device is to refer to the support area within the manufacturer's website for detailed instructions about updating it5. The same applies to installing, renewing or removing Kaspersky software: use Kaspersky's own support pages.

For a household, the subscription question is really a planning question. A licence that lapses leaves the device relying on whatever protection is built in. The NCSC notes that Windows has a built in malware protection tool, Microsoft Defender, which is suitable for the purpose17, and that Windows and macOS have built in malware protection tools which are suitable8. If a subscription ends, the household is not unprotected, but it should know which tool is now doing the job.

Free official guidance is available alongside any paid product. Cyber Essentials is free to download and provides essential guidance to safeguard against common cyber threats like phishing, malware and ransomware18. For the wider household plan, see Getting Started: Preparing Your Household for an Emergency.

Where to get help after a scam or hack

If a scam or hack gets through, the order of steps matters.

  1. Run a full antivirus scan and let it clean up what it finds7.
  2. If you have lost money, tell your bank straight away and report it to Report Fraud, or in Scotland contact Police Scotland13.
  3. Report the message: emails to report@phishing.gov.uk, texts to 772619.
  4. If an account has been hacked, go to the account provider's website and search its help or support pages for the recovery process16.
  5. If the message came to a work device, tell your IT department7.

For a phone or tablet infection, the NCSC says the safest solution is a factory reset, usually found in Settings6. For a PC or laptop, update your device and programs, open your antivirus product and run a scan, then follow its advice6. Back up your most important data, such as photos and key documents, to an external hard drive or a cloud-based storage system3. For more on preparing for and recovering from online incidents, see Cyber Attacks and Major IT Failures: A Household Guide and Staying Informed and in Touch in an Emergency: A Household Guide.

Sources (19)
  1. Protecting devices from viruses and malware, National Cyber Security Centre, 2024
  2. Infected devices guidance, National Cyber Security Centre, 2026
  3. Always back up your most important data, National Cyber Security Centre, 2021
  4. Avoid and report internet scams and phishing: Report internet scams and phishing - GOV.UK, GOV.UK
  5. Security law for smart devices, National Cyber Security Centre, 2024
  6. How to recover an infected device, National Cyber Security Centre, 2021
  7. Phishing and scams: what to do, National Cyber Security Centre, 2026
  8. Ransomware prevention and recovery, National Cyber Security Centre, 2020
  9. Password managers, National Cyber Security Centre, 2026
  10. Using passwords to protect your devices and data, National Cyber Security Centre, 2026
  11. Infected devices | National Cyber Security Centre, National Cyber Security Centre
  12. Cyber security, Essex Prepared, 2026
  13. Hacked accounts, National Cyber Security Centre, 2026
  14. Phishing | National Cyber Security Centre, National Cyber Security Centre
  15. Recovering hacked accounts (NCSC), National Cyber Security Centre
  16. Recovering a hacked account, National Cyber Security Centre, 2022
  17. WannaCry guidance for home users and small businesses, National Cyber Security Centre, 2017
  18. Community Risk Register 2025, North Yorkshire Council, 2025
  19. NHS England » Synnovis cyber incident, public questions and answers, NHS England

Common questions

How many devices does a Kaspersky subscription cover?

The number of devices depends on the licence you buy, and the licence terms are set by Kaspersky for its own products. Check the product description on Kaspersky's website or the retailer's listing before you buy, and count every laptop, desktop, phone and tablet in the household that you want covered. If you are unsure, ask Kaspersky support directly rather than assuming one licence covers the whole house.

Can I use Kaspersky on my phone and tablet?

Kaspersky makes products for phones and tablets as well as computers, but the National Cyber Security Centre is clear that antivirus products do not work in the same way on phones and tablets as on PCs and laptops. If a phone or tablet is infected, the NCSC says the safest solution is a factory reset, usually found in Settings. On Android devices, make sure Google's Play Protect service is enabled.

Does Kaspersky work without internet access?

Antivirus software is designed to detect and remove viruses and other malicious software from your computer or laptop, and it needs regular updates to do that well. The National Cyber Security Centre advises keeping antivirus software up to date, which means a working internet connection from time to time. During a broadband outage, protection already installed keeps running, but new updates will have to wait until you are back online.

How do I cancel or remove Kaspersky from my devices?

Cancelling a subscription and uninstalling the software are two separate steps. For detailed instructions about a specific device, the National Cyber Security Centre says to refer to the support area within the manufacturer's website, and Kaspersky's own support pages cover uninstalling its products. If you remove antivirus from a Windows PC, remember that Windows has a built in malware protection tool, Microsoft Defender, which the NCSC describes as suitable for the purpose.

How do I report a suspicious message in the UK?

Forward suspicious emails to report@phishing.gov.uk, the National Cyber Security Centre's Suspicious Email Reporting Service, and forward suspicious texts to 7726, a free service for reporting spam. If you have lost money, tell your bank straight away and report it as a crime to Report Fraud, or in Scotland contact Police Scotland. If the message arrived on a work laptop or phone, tell your IT department.

How should a household back up its files?

The National Cyber Security Centre advises safeguarding your most important data, such as photos and key documents, by backing it up to an external hard drive or a cloud-based storage system. A backup is a copy stored in a separate safe location. Most providers support regular automatic backup to a connected cloud account, and you can also use removable media such as a USB stick, SD card or external hard drive.