Overview
JavaScript is British Indian Ocean Terr.'s most common secondary barrier
| Value | |
|---|---|
| WAF | 85.4% |
| Antibot | 20.5% |
| CAPTCHA | 26.3% |
| JavaScript | 42.1% |
| Rate Limiting | 13.5% |
| TLS | 21.6% |
WAF covers 85.4% of the 171 surveyed sites in British Indian Ocean Terr. — sub-90%, a notable gap from near-universal adoption elsewhere. JavaScript leads secondary barriers at 42.1%, with CAPTCHA (26.3%), TLS (21.6%), and Antibot (20.5%) closely clustered.
Barrier Landscape
JavaScript tops British Indian Ocean Terr.'s active secondary defences
| Value | |
|---|---|
| WAF | 85.4% |
| Antibot | 20.5% |
| CAPTCHA | 26.3% |
| JavaScript | 42.1% |
| Rate Limiting | 13.5% |
| TLS | 21.6% |
| Has robots.txt | 73.1% |
| Blocks AI crawlers | 18.1% |
WAF stands at 85.4% of British Indian Ocean Terr.'s 171 surveyed sites — the dominant barrier, though below typical levels. JavaScript leads non-WAF barriers at 42.1%; TLS (21.6%) and Antibot (20.5%) follow closely.
Nearly nine percent of British Indian Ocean Territory sites carry no barriers
| % of sites | |
|---|---|
| 0 barriers | 8.8% |
| 1 barrier | 25.7% |
| 2 barriers | 29.8% |
| 3 barriers | 25.1% |
| 4 barriers | 5.3% |
| 5 barriers | 4.1% |
| 6 barriers | 1.2% |
8.8% of British Indian Ocean Terr.'s 171 sites deploy no detectable barrier. Two barriers is the modal count at 29.8%. Sites with three or more barriers account for 35.7% — a higher stacking share than the zero-barrier floor. Sample n=171.
Most British Indian Ocean Terr. sites are Simple to access
| Mean recommended tier | |
|---|---|
| All sites | 1.6 |
A browser mean of 1.58 and median of 1 characterise British Indian Ocean Terr.'s access difficulty. Tier 1 covers 54.4% of sites; Tier 3 accounts for 11.1%. No site in the survey requires Tier 5. Sample n=171.
Most British Indian Ocean Terr. sites are Simple or Easy to access
| % of sites | |
|---|---|
| 1 - Simple | 54.4% |
| 2 - Easy | 33.9% |
| 3 - Moderate | 11.1% |
| 4 - Complex | 0.6% |
| 5 - Advanced | 0% |
Tier 1 accounts for 54.4% of British Indian Ocean Terr.'s 171 sites; Tier 2 adds 33.9%, for a combined 88.3%. Tier 3 applies to 11.1%, Tier 4 to 0.6%, and no site requires Tier 5.
robots.txt
AI crawlers top British Indian Ocean Terr.'s robots.txt bot categories
| % of sites | |
|---|---|
| AI crawlers | 18.1% |
| SEO / search indexing | 19.3% |
| SEO audit tools | 12.3% |
| Commercial scrapers | 14.6% |
| Social / content scrapers | 9.9% |
| Archive / research crawlers | 2.3% |
| Monitoring / uptime bots | 0% |
SEO / search indexing bots are mentioned by 19.3% of British Indian Ocean Terr.'s 171 sites — the most of any category. AI crawlers follow at 18.1%. Commercial scrapers rank third at 14.6%. Figures include all sites, with or without robots.txt.
Uniform rules are British Indian Ocean Terr.'s most common robots.txt posture
| % of sites | |
|---|---|
| Uniform per-agent rules (no path mixing) | 35.7% |
| Path-level mixed rules for same agent | 30.4% |
| Allow-only (no disallow rules) | 0% |
| Mixed AI posture (block some, allow others) | 3.5% |
| Blanket Disallow: / | 7% |
Uniform per-agent rules are the most common posture at 35.7% of all 171 sites. Path-mixed rules cover 30.4%. Blanket Disallow: / accounts for 7.0% — the highest share among this batch. The remaining 26.9% have no robots.txt.
GPTBot faces the most Disallow rules in BIOT's robots.txt
| Disallowed | Allowed (whitelisted) | |
|---|---|---|
| GPTBot | 17.5% | 2.3% |
| CCBot | 10.5% | — |
| ClaudeBot | 13.5% | 1.2% |
| Google-Extended | 12.3% | 2.3% |
| Bytespider | 7.6% | — |
| meta-externalagent | 2.9% | — |
| ChatGPT-User | 12.3% | 2.3% |
| PerplexityBot | 12.3% | 2.3% |
| Applebot-Extended | 5.3% | — |
| OAI-SearchBot | 8.2% | 3.5% |
| anthropic-ai | 7.6% | — |
GPTBot is named in a Disallow rule by 17.5% of the 171 surveyed sites in British Indian Ocean Terr. ClaudeBot follows at 13.5%. OAI-SearchBot holds the highest explicit Allow rate at 3.5%. Sample n=171.
BIOT sectors all name at least one bot to restrict
| % of sites | |
|---|---|
| Publishing | 100% |
| Retail | 100% |
| General | 90% |
| Distance Learning | 80% |
| Mass Media | 80% |
| Online Services | 80% |
| Software & Dev | 80% |
| IT Services | 77.8% |
| Education | 60% |
| Finance | 50% |
| Banking | 40% |
| Government | 40% |
Publishing and Retail each show a 100% named-bot Disallow rate — every site in those sectors names at least one bot to restrict. General follows at 90%. Only 12 sectors are represented in the 171-site sample.
British Indian Ocean Terr.'s leading sectors explicitly allow crawlers
| % of sites | |
|---|---|
| Publishing | 71.4% |
| General | 60% |
| Mass Media | 50% |
| Online Services | 50% |
| IT Services | 44.4% |
| Banking | 40% |
| Distance Learning | 40% |
| Retail | 40% |
| Software & Dev | 40% |
| Education | 30% |
| Finance | 30% |
| Government | 20% |
Publishing has the highest explicit bot Allow rate in British Indian Ocean Terr. at 71.4% of its sites. General (60.0%) and Mass Media (50.0%) follow. Allow data covers 12 sectors, limited by the 171-site survey.
Industry Patterns
Retail is British Indian Ocean Territory's hardest sector to access programmatically
| WAF | Antibot | CAPTCHA | JavaScript | Rate Limit | TLS | robots.txt | Blocks AI | Tier | |
|---|---|---|---|---|---|---|---|---|---|
| Retail | 90% | 10% | 0% | 50% | 10% | 40% | 100% | 30% | Tier 2 |
| Government | 80% | 40% | 20% | 20% | 40% | 20% | 40% | 0% | Tier 2 |
| Publishing | 85.7% | 28.6% | 14.3% | 28.6% | 0% | 14.3% | 100% | 42.9% | Tier 2 |
| IT Services | 100% | 33.3% | 11.1% | 33.3% | 11.1% | 11.1% | 77.8% | 0% | Tier 2 |
| Education | 70% | 10% | 30% | 30% | 20% | 0% | 60% | 0% | Tier 2 |
| General | 100% | 10% | 60% | 50% | 20% | 40% | 90% | 40% | Tier 1 |
| Software & Dev | 80% | 20% | 10% | 30% | 10% | 30% | 80% | 10% | Tier 1 |
| Mass Media | 90% | 0% | 50% | 50% | 10% | 30% | 80% | 30% | Tier 1 |
| Online Services | 100% | 0% | 50% | 60% | 10% | 30% | 80% | 30% | Tier 1 |
| Finance | 70% | 20% | 10% | 20% | 0% | 30% | 50% | 10% | Tier 1 |
| Banking | 70% | 30% | 20% | 10% | 0% | 30% | 40% | 10% | Tier 1 |
| Distance Learning | 90% | 30% | 40% | 50% | 20% | 30% | 80% | 0% | Tier 1 |
Retail posts the highest mean browser tier in British Indian Ocean Terr. at 2.40. Government follows at 1.80. Distance Learning anchors the bottom of the top-12 sectors at mean tier 1.10. Only 12 sectors are represented.
Distance Learning is British Indian Ocean Territory's most accessible sector
British Indian Ocean Terr.'s 171-site survey does not produce a sufficient industry breakdown for a second-tier ranking. The top-12 industries in the chart above represent all sectors with enough sites to rank.