Overview
JavaScript is Vietnam's most common secondary barrier
| Value | |
|---|---|
| WAF | 91.4% |
| Antibot | 20.8% |
| CAPTCHA | 21.4% |
| JavaScript | 40.9% |
| Rate Limiting | 12.8% |
| TLS | 18.7% |
WAF covers 91.4% of sites. JavaScript leads secondary barriers at 40.9%. Antibot (20.8%) and TLS (18.7%) are both elevated among the secondary barriers.
Barrier Landscape
JavaScript tops Vietnam's active secondary defences
| Value | |
|---|---|
| WAF | 91.4% |
| Antibot | 20.8% |
| CAPTCHA | 21.4% |
| JavaScript | 40.9% |
| Rate Limiting | 12.8% |
| TLS | 18.7% |
| Has robots.txt | 80% |
| Blocks AI crawlers | 13.4% |
WAF is at 91.4%. JavaScript at 40.9% heads secondary barriers. TLS (18.7%) and Antibot (20.8%) are both elevated. CAPTCHA (21.4%) and Rate Limiting (12.8%) follow.
Two-barrier sites are Vietnam's most common configuration
| % of sites | |
|---|---|
| 0 barriers | 5.9% |
| 1 barrier | 30.4% |
| 2 barriers | 34.1% |
| 3 barriers | 16.4% |
| 4 barriers | 8.6% |
| 5 barriers | 4.2% |
| 6 barriers | 0.5% |
Two concurrent barriers is the most common configuration at 34.1%. Sites with no barriers account for 5.9%. About 29.6% of sites deploy three or more barriers simultaneously.
Most Vietnam sites are Easy to access
| Mean recommended tier | |
|---|---|
| All sites | 1.6 |
Browser-mode median sits at Tier 2, meaning over half of sampled sites cannot be fetched by HTTP alone. The mean of 1.64 reflects a balance between the near-even Tier 1 and Tier 2 populations.
Most Vietnam sites are Simple or Easy to access
| % of sites | |
|---|---|
| 1 - Simple | 49.5% |
| 2 - Easy | 39.2% |
| 3 - Moderate | 9.1% |
| 4 - Complex | 1.5% |
| 5 - Advanced | 0.6% |
Tier 1 accounts for 49.5% of sites and Tier 2 for 39.2%. Tier 3 adds 9.1%. Advanced tiers (4 and 5) together affect 2.1% of sites.
robots.txt
AI crawlers top Vietnam's robots.txt bot categories
| % of sites | |
|---|---|
| AI crawlers | 15% |
| SEO / search indexing | 12.3% |
| SEO audit tools | 12.7% |
| Commercial scrapers | 8.1% |
| Social / content scrapers | 6.2% |
| Archive / research crawlers | 4.2% |
| Monitoring / uptime bots | 0.4% |
AI crawlers appear in rules on 15.0% of all sites, leading all bot categories. SEO audit tools (12.7%) and SEO/search indexing bots (12.3%) are nearly level. Commercial scrapers follow at 8.1%.
Uniform rules are Vietnam's most common robots.txt posture
| % of sites | |
|---|---|
| Uniform per-agent rules (no path mixing) | 42.3% |
| Path-level mixed rules for same agent | 32.1% |
| Allow-only (no disallow rules) | 3% |
| Mixed AI posture (block some, allow others) | 2.6% |
| Blanket Disallow: / | 2.5% |
Uniform per-agent rules apply on 42.3% of all sites. Path-level mixed rules cover 32.1%. No robots.txt is present on exactly 20.0% of sites. Blanket Disallow affects the smallest group at 2.5%.
GPTBot faces the most Disallow rules in Vietnam's robots.txt
| Disallowed | Allowed (whitelisted) | |
|---|---|---|
| GPTBot | 11.1% | 2.3% |
| CCBot | 8.6% | 1% |
| ClaudeBot | 7.7% | 1% |
| Google-Extended | 7.9% | 1.4% |
| Bytespider | 6.9% | 0.5% |
| meta-externalagent | 3% | 0.3% |
| ChatGPT-User | 5.9% | 2.5% |
| PerplexityBot | 5.9% | 1.9% |
| Applebot-Extended | 5% | 0.5% |
| OAI-SearchBot | 4% | 1.9% |
| anthropic-ai | 5.2% | 1% |
GPTBot is blocked on 11.1% of all sites — the most restricted AI agent. CCBot (8.6%) and ClaudeBot (7.7%) follow. ChatGPT-User has the highest Allow rate at 2.5%.
Design, Retail, Telecom, and Visual Art each name bots on every site
| % of sites | |
|---|---|
| Design | 100% |
| Retail | 100% |
| Telecom | 100% |
| Visual Art | 100% |
| Adult | 90% |
| Agriculture | 90% |
| Airlines | 90% |
| Ceramics & Pottery | 90% |
| Civil Engineering | 90% |
| Comics & Animation | 90% |
| Entertainment | 90% |
| General | 90% |
| Mass Media | 90% |
| Newspapers | 90% |
| Online Services | 90% |
Every sampled site in Design, Retail, Telecom, and Visual Art names at least one bot to restrict. Adult, Agriculture, Airlines, and nine further sectors follow at 90%, showing broad named-bot restriction across industries.
Airlines, Real Estate, and Travel & Tourism lead explicit bot Allow rules
| % of sites | |
|---|---|
| Airlines | 80% |
| Real Estate | 80% |
| Travel & Tourism | 80% |
| Architecture | 70% |
| Photography | 70% |
| Publishing | 70% |
| Renewable Energy | 70% |
| Retail | 70% |
| Science | 70% |
| Telecom | 70% |
| Automotive | 60% |
| Graphic Design | 60% |
| Investment | 60% |
| Market Research | 60% |
| Non-Profit | 60% |
Airlines, Real Estate, and Travel & Tourism each show 80% of sampled sites naming at least one bot in an Allow rule — the highest rate in Vietnam. Architecture, Photography, and Publishing follow at 70%.
Industry Patterns
Hospitality and Jewellery & Luxury share the hardest access profile
| WAF | Antibot | CAPTCHA | JavaScript | Rate Limit | TLS | robots.txt | Blocks AI | Tier | |
|---|---|---|---|---|---|---|---|---|---|
| Hospitality | 90% | 30% | 0% | 60% | 30% | 30% | 50% | 0% | Tier 3 |
| Jewellery & Luxury | 100% | 20% | 20% | 30% | 40% | 50% | 60% | 0% | Tier 3 |
| Beauty & Cosmetics | 70% | 10% | 10% | 40% | 40% | 20% | 80% | 20% | Tier 2 |
| Real Estate | 90% | 30% | 30% | 50% | 40% | 30% | 80% | 30% | Tier 2 |
| Retail | 100% | 10% | 0% | 70% | 10% | 10% | 100% | 50% | Tier 2 |
| Restaurants | 100% | 50% | 30% | 60% | 30% | 30% | 90% | 10% | Tier 2 |
| Pharmaceuticals | 90% | 40% | 50% | 30% | 30% | 20% | 80% | 10% | Tier 2 |
| Apparel & Fashion | 90% | 20% | 20% | 70% | 30% | 40% | 80% | 10% | Tier 2 |
| Computer Hardware | 90% | 20% | 0% | 30% | 20% | 30% | 80% | 10% | Tier 2 |
| Human Resources | 100% | 80% | 50% | 50% | 50% | 30% | 60% | 10% | Tier 2 |
| Consumer Electronics | 90% | 0% | 10% | 40% | 10% | 20% | 80% | 10% | Tier 2 |
| Public Safety | 90% | 30% | 40% | 40% | 10% | 20% | 80% | 10% | Tier 2 |
| Food & Beverages | 100% | 50% | 20% | 70% | 30% | 0% | 90% | 40% | Tier 2 |
| Banking | 90% | 20% | 0% | 40% | 0% | 30% | 80% | 0% | Tier 2 |
| Design | 100% | 20% | 30% | 40% | 20% | 30% | 100% | 30% | Tier 2 |
Hospitality and Jewellery & Luxury both record a mean recommended tier of 2.80 with a median of Tier 3 — the joint highest. Beauty & Cosmetics, Real Estate, and Retail all share a mean of 2.40. The remaining top-15 sectors cluster at median Tier 2.
Eleven sectors share the most accessible floor
| WAF | Antibot | CAPTCHA | JavaScript | Rate Limit | TLS | robots.txt | Blocks AI | Tier | |
|---|---|---|---|---|---|---|---|---|---|
| Mail & Delivery | 70% | 40% | 10% | 10% | 0% | 20% | 80% | 0% | Tier 2 |
| Maritime | 90% | 10% | 0% | 30% | 10% | 30% | 90% | 10% | Tier 2 |
| Sporting Goods | 60% | 10% | 10% | 20% | 30% | 40% | 50% | 0% | Tier 2 |
| Transport & Logistics | 70% | 50% | 10% | 20% | 0% | 20% | 80% | 0% | Tier 2 |
| Automotive | 80% | 10% | 10% | 30% | 20% | 40% | 90% | 30% | Tier 2 |
| Customer Services | 100% | 20% | 30% | 30% | 10% | 40% | 70% | 0% | Tier 2 |
| Equipment & Supplies | 90% | 10% | 0% | 30% | 20% | 10% | 80% | 10% | Tier 2 |
| Events | 90% | 10% | 10% | 80% | 30% | 0% | 60% | 0% | Tier 2 |
| Import & Export | 100% | 30% | 30% | 50% | 0% | 30% | 80% | 10% | Tier 2 |
| Manufacturing | 80% | 10% | 10% | 30% | 0% | 40% | 70% | 0% | Tier 2 |
| Oil & Gas | 60% | 0% | 0% | 30% | 0% | 10% | 60% | 10% | Tier 2 |
| Recruitment & Staffing | 90% | 50% | 50% | 20% | 10% | 40% | 80% | 30% | Tier 2 |
| Travel & Tourism | 100% | 40% | 10% | 80% | 20% | 10% | 80% | 30% | Tier 2 |
| Visual Art | 100% | 30% | 20% | 30% | 0% | 20% | 100% | 20% | Tier 2 |
| Wholesalers | 80% | 10% | 20% | 50% | 20% | 30% | 70% | 20% | Tier 2 |
Automotive, Customer Services, Equipment & Supplies, Events, Import & Export, Manufacturing, Oil & Gas, Recruitment, Travel & Tourism, Visual Art, and Wholesalers all record a mean recommended tier of 1.90 — the joint lowest.