If you stream for a living, one infected download can cost you a broadcast, an account or a payout. The short answer: Bitdefender Total Security and Norton 360 for Gamers are the two to shortlist first, and Microsoft Defender is a strong free baseline. In AV-TEST's Windows 11 round, published in June 2026, Defender, Norton, TotalAV and Bitdefender all scored the maximum 18 out of 18 (AV-TEST).
Lab scores alone won't separate them. What does is how much each one slows the PC while you encode, whether it stays quiet in full-screen, and what it bundles on top: a VPN, webcam protection, dark web monitoring. The picks below are sorted by those differences.
Quick comparison
| Product | Best for | AV-TEST, Windows 11 (June 2026) | Relevant to streaming | Price on the vendor's site |
|---|---|---|---|---|
| Microsoft Defender | A free baseline | 18/18 | Built into Windows | Free; you add your own VPN and password manager |
| Bitdefender Total Security | Low-maintenance protection | 18/18 | Game, Movie and Work modes; webcam and microphone protection | $59.99 first year (up to 5 devices); VPN capped at 200 MB/day, unlimited from Premium at $79.99 |
| Norton 360 for Gamers | Game optimizer and VPN in one | 18/18 | Game Optimizer, no-log VPN, dark web monitoring, PC SafeCam (Windows) | $44.99 first year, $119.99 on renewal (3 devices); optimizer needs a 4+ core CPU |
| TotalAV | Cleanup tools on a budget | 18/18 | Junk and duplicate file cleaner; VPN from Internet Security | Plus: $19 first year (promo), $99 regular rate |
| Avira | Starting with a free plan | 17.5/18 | Prime: unlimited VPN, password manager, 30+ tuning tools | Prime (5 devices): about $67 first year, about $123 on renewal (converted from euros) |
| McAfee | Firewall and a bundled VPN | Top group | Secure VPN, advanced firewall and password manager in every plan | Essential (5 devices): about $45 first year, about $123 regular price (converted from euros) |
Prices were checked on the vendors' own sites on 20 October 2026. Bitdefender, Norton and TotalAV showed US dollar prices. Avira and McAfee showed euros, converted here at about 1.12 dollars to the euro (20 October 2026), so those figures are approximate. First-year deals renew at higher rates.
What a streaming PC needs from an antivirus
Your PC is already busy: the game, the encoder, the browser with chat. AV-TEST measures this by timing browsing, downloads, installs and file copies with and without each product, and most of the top-rated suites add only a slight load. Microsoft Defender, for one, took full marks in the performance category.
Scan timing matters more than brand. PC Gamer's advice is that background protection has little effect on frame rates, while full scans are best kept outside gaming sessions (PC Gamer).
Look for a game or silent mode as well. A pop-up in the middle of a full-screen game is annoying at best; on a live stream, everyone sees it.
Webcam and microphone protection is worth having if you broadcast with a camera. Norton's gamer edition includes PC SafeCam, which alerts you when something tries to access your webcam.
Finally, web protection counts as much as file scanning. OneStream's security guide describes phishing links shared in chat, often posing as giveaways, that lead to fake login pages or malware, and warns about unverified streaming software and plugins (OneStream).
Best antivirus for streamers
Bitdefender Total Security
The low-maintenance option. Bitdefender Total Security scored 18/18 in AV-TEST's June 2026 round. Its Game, Movie and Work modes detect what you're doing, halt pop-ups and pause unimportant background activity, and the plan includes webcam protection plus a microphone monitor that shows which apps have access. The bundled VPN is capped at 200 MB per day per device, so treat it as a taste of the service rather than a tool for all-day streaming.
Bitdefender's US site lists Total Security at $59.99 for the first year, covering up to five devices (Bitdefender). Unlimited VPN starts at Premium Security, listed at $79.99 (plans page). Bitdefender doesn't publish the renewal price, only that it may be higher.
Norton 360 for Gamers
The best fit if you want a game optimizer and a VPN in one package. Norton's gamer edition adds Game Optimizer, which directs CPU power to the game you're running and requires a Windows PC with a 4+ core processor. It also bundles a no-log VPN, dark web monitoring for gamer tags, usernames and email addresses (not available in every country), and PC SafeCam for Windows. One subscription covers up to three devices.
Norton's page lists $44.99 for the first year and $119.99 on renewal (Norton). The company also says its VPN helps against DDoS attacks, doxxing and swatting. Take that as a vendor claim: a VPN hides your IP address, but it does nothing about a phishing link. Norton 360 scored 18/18 in AV-TEST.
TotalAV
A fit for streamers who like cleanup tools bundled with protection. TotalAV scored 18/18 in AV-TEST. Its system tune-up finds duplicate files, clears junk and uninstalls unused apps, and the company says the antivirus is light enough to keep gaming and video editing running; security.org also lists a game mode (security.org). The VPN comes with the Internet Security plan.
Mind the renewal. TotalAV's US site showed a first-year promotion of $19 for the Plus plan against a regular rate of $99 a year (TotalAV). Its pricing table lists annual rates of $99, $129 and $149 for the Plus, Internet Security and Total Security plans (pricing matrix).
Avira
The pick if you'd rather start for free. Avira Free Antivirus uses the same scan engine as Antivirus Pro, so its real-time protection matches the paid version. Prime adds a VPN with no data limits, a password manager and more than 30 optimization tools for Windows, and covers five devices. Avira's store listed Prime at €59.95 for the first year and €109.95 on renewal, roughly $67 and $123 at the 20 October 2026 exchange rate (Avira). Avira scored 17.5 out of 18 in AV-TEST, a fraction behind the top group.
McAfee
Choose McAfee if you want a firewall and a VPN in the same bundle. McAfee's site lists Secure VPN, an advanced firewall and a password manager in every individual plan. On its German site, Essential (five devices) cost €39.95 for the first year against a regular price of €109.95, roughly $45 and $123 at the 20 October 2026 exchange rate. The one-device Basic plan was €29.95 against €86.95, roughly $34 and $97 (McAfee). McAfee landed in AV-TEST's top group.
Is Microsoft Defender enough for streaming?
For protection alone, yes. Defender scored 6/6 for protection, 6/6 for performance and 6/6 for usability in AV-TEST's June 2026 round, for 18/18 and a TOP PRODUCT label. It had a single minor miss in one month on the reference set (99.9% detection), and eight of the 14 products tested detected every sample (AV-TEST). PC Gamer, in its 2023 update, also ranks Defender first as the best free option.
What a paid suite adds is the extras: a VPN, webcam alerts, dark web monitoring, a game optimizer, coverage for several devices in one dashboard. If you already use a password manager and two-factor authentication and don't need the rest, Defender plus those habits covers the basics. If you want the extras in one place, that's what you'd be paying for.
How to reduce antivirus impact on your stream
Start with the schedule. Set full scans for the hours you don't stream, and leave real-time protection on during broadcasts.
Switch on the game or silent mode your product offers, such as Bitdefender's Game, Movie and Work modes or Norton's Game Optimizer. They work differently, but both aim to keep pop-ups and background tasks out of your way.
If you want a lighter option, Avast Free Antivirus also reached the maximum 18/18 in AV-TEST's round.
After any change, run a short private test stream and watch the dropped-frames counter in your streaming software. It takes a few minutes and shows the effect on your own setup rather than on a lab machine.
Beyond antivirus: protect your accounts and income
An antivirus won't stop you from typing your password into a fake login page. OneStream's guide lists the threats streamers meet most often: phishing, stream hijacking, account hacking, DDoS attacks and swatting, malware and spyware. Its first recommendation is multi-factor authentication with strong passwords (OneStream).
In practice that means:
- turn on two-factor authentication for your Google account and for every account that receives your payouts;
- keep your passwords in a password manager rather than in a browser tab or a notes file;
- install streaming software and plugins only from their official sources;
- tell your moderators which links to remove from chat, and why.
The income side deserves the same attention. Mediacube's security page describes the protections around creator accounts and payouts: two-factor authentication, biometrics, KYC and monitoring. If you're still working out what live streaming can earn, see how much YouTube pays for live streaming.
FAQ
Do streamers need an antivirus?
Yes, but Windows already ships with one. Microsoft Defender took the top score in AV-TEST's June 2026 round, so the real question is whether a paid suite's extras are worth the money.
Does antivirus software cause dropped frames?
The load is usually small. AV-TEST rated Defender 6/6 for performance, and PC Gamer says background protection has little effect on frame rates, with full scans the exception. Schedule those for off-stream hours.
Is a free antivirus enough for streaming?
For protection, it can be. Defender and Avast Free Antivirus both reached 18/18 in AV-TEST's round. Free versions leave out extras that paid suites bundle, such as the VPN and password manager in Avira Prime.
Can a VPN stop DDoS attacks and swatting?
A VPN hides your IP address, which OneStream lists as a partial defense against DDoS attacks. It doesn't protect against phishing or malware, so it works alongside an antivirus, not instead of one.
Which one should you pick?
Want it free: Microsoft Defender. Want a game optimizer and VPN in one package: Norton 360 for Gamers. Want protection that stays out of the way: Bitdefender Total Security. Want cleanup tools on a budget: TotalAV. Whichever you choose, read the renewal price before you pay: first-year deals on these products sit well below what the same plan costs a year later.
