The most visible antivirus apps in United Kingdom, October 2026

October 2026 · 15 questions asked from United Kingdom in English · ChatGPT, Google AI Overviews, Gemini and Google AI Mode · 60 answers read

Leader

Norton

51Heralded Score, range 20–60

Most cited source

youtube.com

30citations

From Google AI Mode and Google AI Overviews

Where engines disagree most

Microsoft Defender

1/4engines put it in their top three

Top three on ChatGPT, not on Google AI Mode, Gemini and Google AI Overviews

Brands

Rank Brand Rank change Heralded Score All AI Search Score trend Mentioned Recommended By engine Mentioned by Change
1 Norton US New entry 51 , range 20–60 39#2 71#1
51
  • : score 51 · #1
28% 12% First reading
2 Bitdefender RO New entry 51 , range 24–67 47#1 58#3
51
  • : score 51 · #2
30% 19% First reading
3 McAfee US New entry 41 , range 4–52 23#6 70#2
41
  • : score 41 · #3
16% 5% First reading
4 Microsoft Defender US New entry 38 , range 21–55 37#3 40#6
38
  • : score 38 · #4
20% 11% First reading
5 Malwarebytes US New entry 36 , range 13–56 35#4 39#7
36
  • : score 36 · #5
19% 9% First reading
6 Avast CZ New entry 34 , range 5–52 26#5 47#4
34
  • : score 34 · #6
13% 7% First reading
7 AVG CZ New entry 19 , range 1–47 5#9 43#5
19
  • : score 19 · #7
7% 3% First reading
8 Kaspersky RU New entry 17 , range 2–48 8#7 32#8
17
  • : score 17 · #8
10% 1% First reading
9 Surfshark NL New entry 7 , range 1–45 5#8 9#17
7
  • : score 7 · #9
6% 1% First reading
– Acronis SG Unranked Too few answers Not measured 1#20
–
  • : Unranked
1% 0% None First reading

“=” marks brands whose score ranges overlap, so the test cannot separate them. Every brand named in at least three answers is ranked. AI and Search give each brand’s score and rank on that side alone. By engine has one dot per engine (ChatGPT, Google AI Overviews, Gemini and Google AI Mode), darker the more often it names the brand.

Most cited sources

Rank Source Type Cited in Engines Pages cited Brands its pages mention
11 reddit.com Community 8.3% 3 of 4 5 Not read
12 tomsguide.com Media 8.3% 2 of 4 5 Not read
13 facebook.com Social 5.0% 2 of 4 3 Not read
14 safetydetectives.com Media 6.7% 2 of 4 4 Not read
15 security.org Media 6.7% 3 of 4 3 3
16 cnet.com Media 3.3% 2 of 4 3 Not read
17 hp.com Vendor site 5.0% 1 of 4 2 1
18 rokform.com Vendor site 5.0% 2 of 4 2 3
19 android.com Vendor site 3.3% 1 of 4 2 Not read
20 av-comparatives.org Review site 1.7% 1 of 4 2 Not read

Questions asked

QuestionLanguageMost recommended
Do I need antivirus protection if I only download apps from official app stores? English Microsoft Defender
What can I use instead of relying on my laptop’s built-in security? English Bitdefender
How can I replace separate security apps with a single one for my devices? English Norton
I work remotely and need to protect my laptop when using public Wi-Fi. English Microsoft Defender
My children share devices, and I need to block unsafe downloads. English No brand recommended

Each engine's top three

Method

Each leaderboard ranks brands on two sides. AI is how ChatGPT, Gemini, Google AI Overviews and Google AI Mode answer the board's buyer questions. Search is Google's top 10 results for the keywords behind those questions. All combines the two, where Search is measured.

For the AI side, each month Heralded asks every engine the same buyer questions, twice each, and reads every answer. An answer counts 0 for a brand it leaves out, 50 for a brand it names and 100 for a brand it recommends, and the Heralded Score is built from those. A brand named in at least three answers gets a score and a place.

How the leaderboards are measured