diff --git a/packages/apidom-ls/src/config/codes.ts b/packages/apidom-ls/src/config/codes.ts
index b1bcbd5246..03c9e36ce9 100644
--- a/packages/apidom-ls/src/config/codes.ts
+++ b/packages/apidom-ls/src/config/codes.ts
@@ -772,6 +772,9 @@ enum ApilintCodes {
   OPENAPI2_RESPONSES_DEFINITIONS = 3160000,
   OPENAPI2_RESPONSES_DEFINITIONS_VALUES_TYPE = 3160100,
 
+  OPENAPI2_SECURITY_DEFINITIONS = 3170000,
+  OPENAPI2_SECURITY_DEFINITIONS_VALUES_TYPE = 3170100,
+
   OPENAPI3_0 = 5000000,
 
   OPENAPI3_0_OPENAPI_VALUE_PATTERN_3_0_0 = 5000100,
diff --git a/packages/apidom-ls/src/config/openapi/config.ts b/packages/apidom-ls/src/config/openapi/config.ts
index 9ad24873be..b6e38ab533 100644
--- a/packages/apidom-ls/src/config/openapi/config.ts
+++ b/packages/apidom-ls/src/config/openapi/config.ts
@@ -32,6 +32,7 @@ import responsesMeta from './responses/meta';
 import responsesDefinitionsMeta from './responses-definitions/meta';
 import securityRequirementMeta from './security-requirement/meta';
 import securitySchemeMeta from './security-scheme/meta';
+import securityDefinitionsMeta from './security-definitions/meta';
 import serverMeta from './server/meta';
 import serverVariableMeta from './server-variable/meta';
 import swaggerMeta from './swagger/meta';
@@ -87,6 +88,7 @@ export default {
   responsesDefinitions: responsesDefinitionsMeta,
   securityRequirement: securityRequirementMeta,
   securityScheme: securitySchemeMeta,
+  securityDefinitions: securityDefinitionsMeta,
   server: serverMeta,
   serverVariable: serverVariableMeta,
   swagger: swaggerMeta,
diff --git a/packages/apidom-ls/src/config/openapi/security-definitions/documentation.ts b/packages/apidom-ls/src/config/openapi/security-definitions/documentation.ts
new file mode 100644
index 0000000000..f517814384
--- /dev/null
+++ b/packages/apidom-ls/src/config/openapi/security-definitions/documentation.ts
@@ -0,0 +1,10 @@
+import { OpenAPI2 } from '../target-specs';
+
+const documentation = [
+  {
+    docs: '#### [Security Definitions Object](https://github.com/OAI/OpenAPI-Specification/blob/main/versions/2.0.md#securityDefinitionsObject)\n\nA declaration of the security schemes available to be used in the specification. This does not enforce the security schemes on the operations and only serves to provide the relevant details for each scheme.\n\n##### Patterned Fields\nField Pattern | Type | Description\n---|:---:|---\n{name} | [Security Scheme Object](https://github.com/OAI/OpenAPI-Specification/blob/main/versions/2.0.md#securitySchemeObject) | A single security scheme definition, mapping a "name" to the scheme it defines.\n\n##### Security Definitions Object Example\n\n```js\n{\n  "api_key": {\n    "type": "apiKey",\n    "name": "api_key",\n    "in": "header"\n  },\n  "petstore_auth": {\n    "type": "oauth2",\n    "authorizationUrl": "http://swagger.io/api/oauth/dialog",\n    "flow": "implicit",\n    "scopes": {\n      "write:pets": "modify pets in your account",\n      "read:pets": "read your pets"\n    }\n  }\n}\n```\n\n\n\\\nYAML\n```yaml\napi_key:\n  type: apiKey\n  name: api_key\n  in: header\npetstore_auth:\n  type: oauth2\n  authorizationUrl: http://swagger.io/api/oauth/dialog\n  flow: implicit\n  scopes:\n    write:pets: modify pets in your account\n    read:pets: read your pets\n```',
+    targetSpecs: OpenAPI2,
+  },
+];
+
+export default documentation;
diff --git a/packages/apidom-ls/src/config/openapi/security-definitions/lint/index.ts b/packages/apidom-ls/src/config/openapi/security-definitions/lint/index.ts
new file mode 100644
index 0000000000..f49a5fe791
--- /dev/null
+++ b/packages/apidom-ls/src/config/openapi/security-definitions/lint/index.ts
@@ -0,0 +1,5 @@
+import valuesTypeLint from './values--type';
+
+const lints = [valuesTypeLint];
+
+export default lints;
diff --git a/packages/apidom-ls/src/config/openapi/security-definitions/lint/values--type.ts b/packages/apidom-ls/src/config/openapi/security-definitions/lint/values--type.ts
new file mode 100644
index 0000000000..7410c417be
--- /dev/null
+++ b/packages/apidom-ls/src/config/openapi/security-definitions/lint/values--type.ts
@@ -0,0 +1,19 @@
+import { DiagnosticSeverity } from 'vscode-languageserver-types';
+
+import ApilintCodes from '../../../codes';
+import { LinterMeta } from '../../../../apidom-language-types';
+import { OpenAPI2 } from '../../target-specs';
+
+const valuesTypeLint: LinterMeta = {
+  code: ApilintCodes.OPENAPI2_SECURITY_DEFINITIONS_VALUES_TYPE,
+  source: 'apilint',
+  message: 'Security Definitions Object values must be of Security Scheme Object shape',
+  severity: DiagnosticSeverity.Error,
+  linterFunction: 'apilintChildrenOfElementsOrClasses',
+  linterParams: [['securityScheme']],
+  marker: 'key',
+  data: {},
+  targetSpecs: OpenAPI2,
+};
+
+export default valuesTypeLint;
diff --git a/packages/apidom-ls/src/config/openapi/security-definitions/meta.ts b/packages/apidom-ls/src/config/openapi/security-definitions/meta.ts
new file mode 100644
index 0000000000..687725779c
--- /dev/null
+++ b/packages/apidom-ls/src/config/openapi/security-definitions/meta.ts
@@ -0,0 +1,10 @@
+import lint from './lint';
+import documentation from './documentation';
+import { FormatMeta } from '../../../apidom-language-types';
+
+const meta: FormatMeta = {
+  lint,
+  documentation,
+};
+
+export default meta;