Pasteguard vs Sublime Security
Side-by-side comparison of features, pricing, and ratings
At a glance
| Dimension | Pasteguard | Sublime Security |
|---|---|---|
| Pricing | Free (open-source) | Contact for pricing (paid) |
| Primary Use Case | PII masking for AI provider interactions | Enterprise email security (BEC/VEC/phishing) |
| Key Feature | Auto-detect & mask 30+ PII types in AI prompts | AI-driven threat detection with custom YARA-like rules |
| Target User | Developers, compliance officers, and privacy-conscious teams | Security teams in mid-to-large enterprises |
| Deployment | Local proxy, browser extension, or Docker self-hosted | Cloud integrated with M365 & Google Workspace |
| Integrations | OpenAI, Anthropic, Google Gemini, coding agents, ChatGPT, Claude | Microsoft 365, Google Workspace |
PasteGuard masks PII and secrets in your browser and API traffic before text reaches ChatGPT, Claude, Gemini, or any model API.
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Agentic email security that auto-triages reported phishing and writes custom detections for your SOC
Visit WebsiteWhat real users say: Pasteguard vs Sublime Security
Not marketing copy and not our opinion — a structured sweep of public discussion (reviews, forums, communities and video comments), showing what people praise and what they complain about for each tool.
Pasteguard
38 mentions across 3 sources · 55% positive — mixed (averaged across 3 sources)
Hacker News, YouTube, GitHub
What users praise
- • Free and open-source (Apache 2.0) with a local-first architecture.
- • Automatically detects over 30 types of PII and secrets.
- • Preserves AI context by replacing data with placeholders like [[EMAIL_1]].
- • Supports multiple AI providers: ChatGPT, Claude, Gemini, and coding agents.
What frustrates them
- • Reliability issues: 400 errors with Claude Code and long-context DOMException.
- • Docker startup crashes reported by some users.
- • Limited community support and sparse documentation for integrations.
- • Configuring with LibreChat and other tools requires manual setup.
Researched Aug 1, 2026
Sublime Security
20 mentions across 2 sources · 80% positive (weighted across 2 sources)
YouTube, Lemmy
What users praise
- • Verdicts show matched detections and signal analysis — analysts can read why, not trust a score
- • Sublime Script is a YARA-like language your engineers can inspect, test, and tune
- • ASA auto-triages user-reported phishing end to end, cutting the abuse-mailbox backlog
- • ADÉ authors backtested, environment-specific detections that land ready for one-click approval
What frustrates them
- • Community footprint is thin — one video thread, and no independent Reddit or HN validation
- • Vendor efficiency claims (80% faster, 70% fewer FPs) are unverified by third parties
- • Tuning workload is real and continuous if no one owns the rule library
- • Not set-and-forget — teams replacing a legacy SEG should expect an operational shift
Researched Oct 14, 2026
Who should pick which
- CISO of a mid-size company facing frequent BEC attacksPick: Sublime Security
Sublime's AI-driven detection and custom rules are specifically designed to combat BEC and impersonation attacks, with integration into M365/Workspace and low false positives.
- Developer using AI coding assistants with production credentialsPick: Pasteguard
Pasteguard automatically masks API keys, passwords, and other secrets before they reach coding agents like Codex or Claude Code, preventing credential leakage.
- Compliance officer enforcing GDPR in AI chat usagePick: Pasteguard
Pasteguard's PII detection and placeholder replacement enable safe use of ChatGPT/Claude without exposing personal data, supporting GDPR requirements.
- SOC analyst needing to investigate phishing campaignsPick: Sublime Security
Sublime's threat hunting interface and deep email attack visibility empower analysts to proactively investigate and respond to email threats.
- Legal team sharing client documents via AI summarizationPick: Pasteguard
Pasteguard can mask client names and sensitive details before sending to AI, maintaining confidentiality while leveraging AI productivity.
Frequently Asked Questions
Can Sublime Security and Pasteguard be used together?
Yes. Sublime protects your email inbox from advanced threats, while Pasteguard protects sensitive data when you copy-and-paste email content into AI tools. They address different attack vectors.
Does Pasteguard support enterprise SSO or audit logs?
As of now, Pasteguard does not yet support enterprise SSO or advanced access controls. It is best suited for teams that can self-host via Docker or use the browser extension.
Is Sublime Security a replacement for my existing email gateway?
Sublime can complement or replace legacy gateways like Proofpoint/Mimecast, but it focuses on advanced threats (BEC, VEC, phishing). You may still need basic spam filtering.
How does Pasteguard handle AI responses that contain placeholders?
Pasteguard can restore the original data in responses if the AI returns the placeholders unchanged. This depends on the AI maintaining the placeholder format.
What PII types does Pasteguard detect?
Over 30 types including names, emails, phone numbers, addresses, credit cards, API keys, passwords, JWTs, passport/SSN numbers, and more. See the full list on GitHub.
Does Sublime Security offer a free trial or demo?
Sublime Security typically requires contacting sales for a demo or trial. No self-service free tier is available publicly.
Is Pasteguard fully open-source?
Yes, Pasteguard is open-source under Apache 2.0 and available on GitHub. The code is auditable and contributions are welcome.
Which AI providers does Pasteguard work with?
It works with OpenAI, Anthropic, Google Gemini, and coding agents like Codex, Claude Code, Cursor, and Windsurf via its HTTP API proxy or browser extension.
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Last reviewed: July 3, 2026