Is marketapp.online safe?

suspiciouslow confidence
44/100

context safety score

A score of 44/100 indicates multiple risk signals were detected. This entity shows patterns commonly associated with malicious intent.

identity
90
behavior
80
content
17
graph
30

5 threat patterns detected

high

brand impersonation

The site marketapp.online presents itself as the official CS:GO/CS2 marketplace application download page, replicating the branding, logo, UI, and content of the legitimate market.csgo.com. The domain marketapp.online is not market.csgo.com, but the page displays 'CSGO Market' branding, uses the official market logo SVG, references '@2026 market.csgo.com' in the footer, and includes hreflang alternate links pointing to market.csgo.com — all designed to make users believe they are on the official site. (location: page.html:156, page.html:108-116, page-text.txt:75)

high

malicious redirect

The HTML head contains hreflang alternate link tags pointing to https://market.csgo.com/en/download (and other language variants) rather than to the current domain marketapp.online. This is a technique used by impersonation sites to pass SEO signals as legitimate while operating from a different domain, and may deceive users or automated agents into treating the page as equivalent to the official domain. (location: page.html:108-116)

high

social engineering

The page solicits users to download desktop clients, mobile apps, and browser extensions ('MarketApp Desktop Client', 'MarketApp Mobile', 'MarketApp Extension') while impersonating the legitimate market.csgo.com. Downloading these applications from an unofficial domain instead of the real marketplace could result in malware installation. Features advertised include 'auto-confirmation of trades after downloading the maFile' — the maFile is a Steam Guard mobile authenticator file that grants full account control, making this a high-risk social engineering lure. (location: page-text.txt:39, page.html:191)

high

credential harvesting

The site is a clone of market.csgo.com's download page, encouraging users to download apps and browser extensions from an unofficial domain. Browser extensions in particular have access to all page data including credentials. The Steam 'maFile' download lure ('Set up auto-confirmation of trades after downloading the maFile') targets Steam authenticator files which contain shared_secret and identity_secret keys that grant full Steam account takeover capability. (location: page-text.txt:39, page.html:191)

low

hidden content

The embedded serverApp-state JSON block (type='application/json') contains SSR transfer state data including internal localhost URLs ('http://localhost:4201/assets/...'), revealing the server-side rendering infrastructure and internal asset server address. This is information leakage rather than a user-facing threat, but indicates the site was built from the official codebase or a direct copy of it. (location: page.html:241, page-text.txt:89)

API

curl https://api.brin.sh/domain/marketapp.online

FAQ: how to interpret this assessment

Common questions teams ask before deciding whether to use this domain in agent workflows.

Is marketapp.online safe for AI agents to use?

marketapp.online currently scores 44/100 with a suspicious verdict and low confidence. The goal is to protect agents from high-risk context before they act on it. Treat this as a decision signal: higher scores suggest lower observed risk, while lower scores mean you should add review or block this domain.

How should I interpret the score and verdict?

Use the score as a policy threshold: 80–100 is safe, 50–79 is caution, 20–49 is suspicious, and 0–19 is dangerous. Teams often auto-allow safe, require human review for caution/suspicious, and block dangerous.

How does brin compute this domain score?

brin evaluates four dimensions: identity (source trust), behavior (runtime patterns), content (malicious instructions), and graph (relationship risk). Analysis runs in tiers: static signals, deterministic pattern checks, then AI semantic analysis when needed.

What do identity, behavior, content, and graph mean for this domain?

Identity checks source trust, behavior checks unusual runtime patterns, content checks for malicious instructions, and graph checks risky relationships to other entities. Looking at sub-scores helps you understand why an entity passed or failed.

Why does brin scan packages, repos, skills, MCP servers, pages, and commits?

brin performs risk assessments on external context before it reaches an AI agent. It scores that context for threats like prompt injection, hijacking, credential harvesting, and supply chain attacks, so teams can decide whether to block, review, or proceed safely.

Can I rely on a safe verdict as a full security guarantee?

No. A safe verdict means no significant risk signals were detected in this scan. It is not a formal guarantee; assessments are automated and point-in-time, so combine scores with your own controls and periodic re-checks.

When should I re-check before using an entity?

Re-check before high-impact actions such as installs, upgrades, connecting MCP servers, executing remote code, or granting secrets. Use the API in CI or runtime gates so decisions are based on the latest scan.

Learn more in threat detection docs, how scoring works, and the API overview.

Last Scanned

March 4, 2026

Verdict Scale

safe80–100
caution50–79
suspicious20–49
dangerous0–19

Disclaimer

Assessments are automated and may contain errors. Findings are risk indicators, not confirmed threats. This is a point-in-time assessment; security posture can change.

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