diff --git a/src/README.md b/src/README.md
index d355eaf..d04f614 100644
--- a/src/README.md
+++ b/src/README.md
@@ -6,6 +6,10 @@ Automatically Tests for vulnerabilities after generating tests from openapi spec
 
 ![UnDocumented petstore API endpoint HTTP method results](/assets/images/tests/offat-v0.5.0.png)
 
+>  [!WARNING]  
+>  At the moment HTTP 2/3 aren't supported since fasthttpclient is used under the hood to increase performance.
+>  Visit [FastHTTP README](https://github.com/valyala/fasthttp) for more details
+
 ## Security Checks
 
 - [x] Restricted HTTP Method/Verb
diff --git a/src/cmd/offat/main.go b/src/cmd/offat/main.go
index 92ad6ab..340f92e 100644
--- a/src/cmd/offat/main.go
+++ b/src/cmd/offat/main.go
@@ -153,14 +153,15 @@ func main() {
 		DefaultQueryParams: config.QueryParams.ToMap(),
 
 		// Tests
-		RunUnrestrictedHttpMethodTest: true,
-		RunBasicSQLiTest:              true,
-		RunBasicSSRFTest:              true,
-		RunOsCommandInjectionTest:     true,
-		RunXssHtmlInjectionTest:       true,
-		RunSstiInjectionTest:          true,
-		RunBolaTest:                   true,
-		RunBolaTrailingPathTest:       true,
+		RunUnrestrictedHttpMethodTest:    true,
+		RunBasicSQLiTest:                 true,
+		RunBasicSSRFTest:                 true,
+		RunOsCommandInjectionTest:        true,
+		RunXssHtmlInjectionTest:          true,
+		RunSstiInjectionTest:             true,
+		RunBolaTest:                      true,
+		RunBolaTrailingPathTest:          true,
+		RunMissingAuthImplementationTest: true,
 
 		// SSRF Test
 		SsrfUrl: *config.SsrfUrl,
diff --git a/src/pkg/tgen/missingAuth.go b/src/pkg/tgen/missingAuth.go
new file mode 100644
index 0000000..71ab786
--- /dev/null
+++ b/src/pkg/tgen/missingAuth.go
@@ -0,0 +1,58 @@
+package tgen
+
+import (
+	"github.com/OWASP/OFFAT/src/pkg/parser"
+	"github.com/OWASP/OFFAT/src/pkg/utils"
+	c "github.com/dmdhrumilmistry/fasthttpclient/client"
+	"github.com/rs/zerolog/log"
+)
+
+func MissingAuthTest(baseUrl string, docParams []*parser.DocHttpParams, queryParams map[string]string, headers map[string]string) []*ApiTest {
+	var tests []*ApiTest
+	testName := "Missing Auth Implementation Test"
+	immuneResponseCode := []int{401, 403, 404, 405}
+	authKeys := []string{
+		"Authorization",
+		"authorization",
+		"X-API-Key",
+		"x-api-key",
+		"API_KEY",
+		"api_key",
+	}
+
+	for _, docParam := range docParams {
+		// skip test generation if there are no security schemes
+		if len(docParam.Security) < 1 {
+			continue
+		}
+
+		url, headersMap, queryMap, bodyData, pathWithParams, err := httpParamToRequest(baseUrl, docParam, queryParams, headers, utils.JSON)
+		if err != nil {
+			log.Error().Err(err).Msgf("failed to generate request params from DocHttpParams, skipping test for this case %v due to error %v", *docParam, err)
+			continue
+		}
+
+		// Delete auth data from header and query
+		DeleteAuthFromMap(headersMap, authKeys)
+		DeleteAuthFromMap(queryMap, authKeys)
+
+		request := c.NewRequest(url, docParam.HttpMethod, queryMap, headersMap, bodyData)
+
+		test := ApiTest{
+			TestName:            testName,
+			Request:             request,
+			Path:                docParam.Path,
+			PathWithParams:      pathWithParams,
+			ImmuneResponseCodes: immuneResponseCode,
+		}
+		tests = append(tests, &test)
+	}
+
+	return tests
+}
+
+func DeleteAuthFromMap(authMap map[string]string, keys []string) {
+	for _, key := range keys {
+		delete(authMap, key)
+	}
+}
diff --git a/src/pkg/tgen/tgen.go b/src/pkg/tgen/tgen.go
index 7fe0b13..aeb84a9 100644
--- a/src/pkg/tgen/tgen.go
+++ b/src/pkg/tgen/tgen.go
@@ -16,14 +16,15 @@ type TGenHandler struct {
 	BaseUrl            string
 
 	// Register all tests using bool values below
-	RunUnrestrictedHttpMethodTest bool
-	RunBasicSQLiTest              bool
-	RunBasicSSRFTest              bool
-	RunOsCommandInjectionTest     bool
-	RunXssHtmlInjectionTest       bool
-	RunSstiInjectionTest          bool
-	RunBolaTest                   bool
-	RunBolaTrailingPathTest       bool
+	RunUnrestrictedHttpMethodTest    bool
+	RunBasicSQLiTest                 bool
+	RunBasicSSRFTest                 bool
+	RunOsCommandInjectionTest        bool
+	RunXssHtmlInjectionTest          bool
+	RunSstiInjectionTest             bool
+	RunBolaTest                      bool
+	RunBolaTrailingPathTest          bool
+	RunMissingAuthImplementationTest bool
 
 	// SSRF Test related data
 	SsrfUrl string
@@ -73,6 +74,14 @@ func (t *TGenHandler) GenerateTests() []*ApiTest {
 		log.Info().Msgf("%d tests generated for BOLA Trailing Path", len(newTests))
 	}
 
+	// Missing Auth Implementation Test
+	if t.RunMissingAuthImplementationTest {
+		newTests := MissingAuthTest(t.BaseUrl, t.Doc, t.DefaultQueryParams, t.DefaultHeaders)
+		tests = append(tests, newTests...)
+
+		log.Info().Msgf("%d tests generated for Missing Auth Implementation", len(newTests))
+	}
+
 	// Basic SQLI Test
 	if t.RunBasicSQLiTest {
 		injectionConfig := InjectionConfig{
@@ -133,6 +142,7 @@ func (t *TGenHandler) GenerateTests() []*ApiTest {
 		log.Info().Msgf("%d tests generated for Basic OS Command Injection", len(newTests))
 	}
 
+	// SSRF Test
 	if t.RunBasicSSRFTest && utils.ValidateURL(t.SsrfUrl) {
 		injectionConfig := InjectionConfig{
 			InBody:   true,