{"adoption": {"forks": 217, "observed_at": "2026-08-28T04:04:58.042498+00:00", "stars": 1522}, "canonical_url": "https://ross.abutalabs.com/products/solidity-security-blog", "card": {"archived": false, "artifact_type": "learning-resource", "description": "Comprehensive list of known attack vectors and common anti-patterns", "domain": ["blockchain", "security", "tutorials", "developer-tools"], "enriched": true, "function": ["security", "documentation", "developer-tools"], "health_score": 20, "homepage": "https://blog.sigmaprime.io/solidity-security.html", "language": null, "license": "NOASSERTION", "license_family": "other", "maturity": "maintenance", "member_repos": ["sigp/solidity-security-blog"], "name": "sigp/solidity-security-blog", "platform": [], "pushed_at": "2022-09-23T12:06:25+00:00", "repo": "sigp/solidity-security-blog", "stars": 1522, "tags": ["solidity", "ethereum", "smart-contract-security", "attack-vectors", "anti-patterns", "blockchain-security", "educational", "smart-contracts", "web-server"], "topics": [], "urls": [], "use_cases": ["learn common solidity smart contract vulnerabilities", "understand how the DAO reentrancy hack happened", "find preventative techniques for solidity security flaws", "study real-world ethereum exploit case studies", "review smart contract anti-patterns before an audit", "learn about delegatecall and parity wallet hacks", "understand arithmetic overflow vulnerabilities in solidity"], "what_it_is": "A comprehensive reference documenting known Solidity smart contract attack vectors and common anti-patterns, hosted on GitHub as the basis for a Sigma Prime blog post and the Mastering Ethereum book. Each vulnerability is explained with its mechanics, preventative techniques, and real-world exploit examples like The DAO and the Parity wallet hacks.", "when_to_avoid": ["you need an automated vulnerability scanner or static analysis tool rather than educational material", "you need coverage of the latest vulnerabilities, as the content was last substantially updated in 2018", "you need executable code or a library rather than documentation"], "when_to_choose": ["you are learning solidity or ethereum smart contract security", "you need real-world examples of famous exploits like The DAO or Parity multisig hacks", "you want a curated checklist of attack vectors to review before writing or auditing contracts"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/solidity-security-blog", "repo": "sigp/solidity-security-blog", "role": "main", "score": 32}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:04:58.042498+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T04:31:49.395091+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "51702f587b06f7cebce4a923f2012c864aa05306c885d0ccd8555215ccd656f2", "fetched_at": "2026-08-28T04:04:58.042498+00:00", "kind": "readme", "missing": false, "url": "https://github.com/sigp/solidity-security-blog"}, {"content_hash": "fd4d79d3db19f27fe16f6d78e1242299c4b1a5eaf923a6bdd9c77faf50be657e", "fetched_at": "2026-08-29T11:35:11.414901+00:00", "kind": "homepage", "missing": false, "url": "https://blog.sigmaprime.io/solidity-security.html"}, {"content_hash": "7b312b50f7d913ec01200e0bf5487a3bfb199d6be6fe8c6e8d0a25e213064f87", "fetched_at": "2026-08-29T11:35:11.420563+00:00", "kind": "site_page", "missing": false, "url": "https://sigmaprime.io/about"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:04:58.042498+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T04:31:49.395091+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "51702f587b06f7cebce4a923f2012c864aa05306c885d0ccd8555215ccd656f2", "fetched_at": "2026-08-28T04:04:58.042498+00:00", "kind": "readme", "missing": false, "url": "https://github.com/sigp/solidity-security-blog"}, {"content_hash": "fd4d79d3db19f27fe16f6d78e1242299c4b1a5eaf923a6bdd9c77faf50be657e", "fetched_at": "2026-08-29T11:35:11.414901+00:00", "kind": "homepage", "missing": false, "url": "https://blog.sigmaprime.io/solidity-security.html"}, {"content_hash": "7b312b50f7d913ec01200e0bf5487a3bfb199d6be6fe8c6e8d0a25e213064f87", "fetched_at": "2026-08-29T11:35:11.420563+00:00", "kind": "site_page", "missing": false, "url": "https://sigmaprime.io/about"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T04:31:49.395091+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "51702f587b06f7cebce4a923f2012c864aa05306c885d0ccd8555215ccd656f2", "fetched_at": "2026-08-28T04:04:58.042498+00:00", "kind": "readme", "missing": false, "url": "https://github.com/sigp/solidity-security-blog"}, {"content_hash": "fd4d79d3db19f27fe16f6d78e1242299c4b1a5eaf923a6bdd9c77faf50be657e", "fetched_at": "2026-08-29T11:35:11.414901+00:00", "kind": "homepage", "missing": false, "url": "https://blog.sigmaprime.io/solidity-security.html"}, {"content_hash": "7b312b50f7d913ec01200e0bf5487a3bfb199d6be6fe8c6e8d0a25e213064f87", "fetched_at": "2026-08-29T11:35:11.420563+00:00", "kind": "site_page", "missing": false, "url": "https://sigmaprime.io/about"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:04:58.042498+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:04:58.042498+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:04:58.042498+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T04:31:49.395091+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "51702f587b06f7cebce4a923f2012c864aa05306c885d0ccd8555215ccd656f2", "fetched_at": "2026-08-28T04:04:58.042498+00:00", "kind": "readme", "missing": false, "url": "https://github.com/sigp/solidity-security-blog"}, {"content_hash": "fd4d79d3db19f27fe16f6d78e1242299c4b1a5eaf923a6bdd9c77faf50be657e", "fetched_at": "2026-08-29T11:35:11.414901+00:00", "kind": "homepage", "missing": false, "url": "https://blog.sigmaprime.io/solidity-security.html"}, {"content_hash": "7b312b50f7d913ec01200e0bf5487a3bfb199d6be6fe8c6e8d0a25e213064f87", "fetched_at": "2026-08-29T11:35:11.420563+00:00", "kind": "site_page", "missing": false, "url": "https://sigmaprime.io/about"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:04:58.042498+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:04:58.042498+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T04:31:49.395091+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "51702f587b06f7cebce4a923f2012c864aa05306c885d0ccd8555215ccd656f2", "fetched_at": "2026-08-28T04:04:58.042498+00:00", "kind": "readme", "missing": false, "url": "https://github.com/sigp/solidity-security-blog"}, {"content_hash": "fd4d79d3db19f27fe16f6d78e1242299c4b1a5eaf923a6bdd9c77faf50be657e", "fetched_at": "2026-08-29T11:35:11.414901+00:00", "kind": "homepage", "missing": false, "url": "https://blog.sigmaprime.io/solidity-security.html"}, {"content_hash": "7b312b50f7d913ec01200e0bf5487a3bfb199d6be6fe8c6e8d0a25e213064f87", "fetched_at": "2026-08-29T11:35:11.420563+00:00", "kind": "site_page", "missing": false, "url": "https://sigmaprime.io/about"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:04:58.042498+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:04:58.042498+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:04:58.042498+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T04:31:49.395091+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "51702f587b06f7cebce4a923f2012c864aa05306c885d0ccd8555215ccd656f2", "fetched_at": "2026-08-28T04:04:58.042498+00:00", "kind": "readme", "missing": false, "url": "https://github.com/sigp/solidity-security-blog"}, {"content_hash": "fd4d79d3db19f27fe16f6d78e1242299c4b1a5eaf923a6bdd9c77faf50be657e", "fetched_at": "2026-08-29T11:35:11.414901+00:00", "kind": "homepage", "missing": false, "url": "https://blog.sigmaprime.io/solidity-security.html"}, {"content_hash": "7b312b50f7d913ec01200e0bf5487a3bfb199d6be6fe8c6e8d0a25e213064f87", "fetched_at": "2026-08-29T11:35:11.420563+00:00", "kind": "site_page", "missing": false, "url": "https://sigmaprime.io/about"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:04:58.042498+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:04:58.042498+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T04:31:49.395091+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "51702f587b06f7cebce4a923f2012c864aa05306c885d0ccd8555215ccd656f2", "fetched_at": "2026-08-28T04:04:58.042498+00:00", "kind": "readme", "missing": false, "url": "https://github.com/sigp/solidity-security-blog"}, {"content_hash": "fd4d79d3db19f27fe16f6d78e1242299c4b1a5eaf923a6bdd9c77faf50be657e", "fetched_at": "2026-08-29T11:35:11.414901+00:00", "kind": "homepage", "missing": false, "url": "https://blog.sigmaprime.io/solidity-security.html"}, {"content_hash": "7b312b50f7d913ec01200e0bf5487a3bfb199d6be6fe8c6e8d0a25e213064f87", "fetched_at": "2026-08-29T11:35:11.420563+00:00", "kind": "site_page", "missing": false, "url": "https://sigmaprime.io/about"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T04:31:49.395091+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "51702f587b06f7cebce4a923f2012c864aa05306c885d0ccd8555215ccd656f2", "fetched_at": "2026-08-28T04:04:58.042498+00:00", "kind": "readme", "missing": false, "url": "https://github.com/sigp/solidity-security-blog"}, {"content_hash": "fd4d79d3db19f27fe16f6d78e1242299c4b1a5eaf923a6bdd9c77faf50be657e", "fetched_at": "2026-08-29T11:35:11.414901+00:00", "kind": "homepage", "missing": false, "url": "https://blog.sigmaprime.io/solidity-security.html"}, {"content_hash": "7b312b50f7d913ec01200e0bf5487a3bfb199d6be6fe8c6e8d0a25e213064f87", "fetched_at": "2026-08-29T11:35:11.420563+00:00", "kind": "site_page", "missing": false, "url": "https://sigmaprime.io/about"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T04:31:49.395091+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "51702f587b06f7cebce4a923f2012c864aa05306c885d0ccd8555215ccd656f2", "fetched_at": "2026-08-28T04:04:58.042498+00:00", "kind": "readme", "missing": false, "url": "https://github.com/sigp/solidity-security-blog"}, {"content_hash": "fd4d79d3db19f27fe16f6d78e1242299c4b1a5eaf923a6bdd9c77faf50be657e", "fetched_at": "2026-08-29T11:35:11.414901+00:00", "kind": "homepage", "missing": false, "url": "https://blog.sigmaprime.io/solidity-security.html"}, {"content_hash": "7b312b50f7d913ec01200e0bf5487a3bfb199d6be6fe8c6e8d0a25e213064f87", "fetched_at": "2026-08-29T11:35:11.420563+00:00", "kind": "site_page", "missing": false, "url": "https://sigmaprime.io/about"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T04:31:49.395091+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "51702f587b06f7cebce4a923f2012c864aa05306c885d0ccd8555215ccd656f2", "fetched_at": "2026-08-28T04:04:58.042498+00:00", "kind": "readme", "missing": false, "url": "https://github.com/sigp/solidity-security-blog"}, {"content_hash": "fd4d79d3db19f27fe16f6d78e1242299c4b1a5eaf923a6bdd9c77faf50be657e", "fetched_at": "2026-08-29T11:35:11.414901+00:00", "kind": "homepage", "missing": false, "url": "https://blog.sigmaprime.io/solidity-security.html"}, {"content_hash": "7b312b50f7d913ec01200e0bf5487a3bfb199d6be6fe8c6e8d0a25e213064f87", "fetched_at": "2026-08-29T11:35:11.420563+00:00", "kind": "site_page", "missing": false, "url": "https://sigmaprime.io/about"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 0, "longevity": 100, "rhythm": 35}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": ["no_releases", "no_license"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 3017, "days_push": 1440, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 32, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}