diff --git a/cache/cache.go b/cache/cache.go
index 074a490..b1c8194 100644
--- a/cache/cache.go
+++ b/cache/cache.go
@@ -5,8 +5,8 @@ import (
 )
 
 type Cache interface {
-	Get(k string) (interface{}, bool)
-	Set(k string, v interface{}, d time.Duration)
+	Get(k string) (any, bool)
+	Set(k string, v any, d time.Duration)
 	Flush()
 }
 
diff --git a/cache/in_memory.go b/cache/in_memory.go
index 0ea1b45..e2331c1 100644
--- a/cache/in_memory.go
+++ b/cache/in_memory.go
@@ -10,11 +10,11 @@ type inMemory struct {
 	cache *gocache.Cache
 }
 
-func (i *inMemory) Get(k string) (interface{}, bool) {
+func (i *inMemory) Get(k string) (any, bool) {
 	return i.cache.Get(k)
 }
 
-func (i *inMemory) Set(k string, v interface{}, d time.Duration) {
+func (i *inMemory) Set(k string, v any, d time.Duration) {
 	i.cache.Set(k, v, d*time.Minute)
 }
 
diff --git a/config/common.go b/config/common.go
index 63cca04..fd0be77 100644
--- a/config/common.go
+++ b/config/common.go
@@ -32,7 +32,7 @@ func MustReadFile(fileName string) []byte {
 	return content
 }
 
-func MustUnmarshalYaml(path string, content []byte, decodedContent interface{}) {
+func MustUnmarshalYaml(path string, content []byte, decodedContent any) {
 	err := yaml.Unmarshal(content, decodedContent)
 	if err != nil {
 		panic(fmt.Sprintf("Can't unmarshall the content of %s. Error: %s", path, err))
diff --git a/datafilter/types.go b/datafilter/base.go
similarity index 53%
rename from datafilter/types.go
rename to datafilter/base.go
index a26608e..cc37b17 100644
--- a/datafilter/types.go
+++ b/datafilter/base.go
@@ -1,17 +1,13 @@
 package datafilter
 
+import "regexp"
+
 type Validate interface {
 	Validate(data *string) bool
 	ToString() string
 	Disable() bool
 }
 
-//filter types
-const (
-	PAN   = "pan"
-	OWASP = "owasp"
-)
-
 type pattern struct {
 	Name       string `json:"name"`
 	Rule       string `json:"rule"`
@@ -19,3 +15,16 @@ type pattern struct {
 	Message    string `json:"message"`
 	IsDisabled bool   `json:"disable"`
 }
+
+func (p *pattern) Validate(data *string) bool {
+	matched, _ := regexp.MatchString(p.Rule, *data)
+	return matched
+}
+
+func (p *pattern) ToString() string {
+	return p.Name + " " + p.Message
+}
+
+func (p *pattern) Disable() bool {
+	return p.IsDisabled
+}
diff --git a/datafilter/load.go b/datafilter/load.go
index e52a769..3f84c99 100644
--- a/datafilter/load.go
+++ b/datafilter/load.go
@@ -10,6 +10,12 @@ import (
 	"path/filepath"
 )
 
+//filter types
+const (
+	PAN   = "pan"
+	OWASP = "owasp"
+)
+
 type ruleSet struct {
 	Type  string  `yaml:"type"`
 	Rules []rules `yaml:"rules"`
@@ -44,11 +50,11 @@ func Load(dataFilterRuleSetPath string) {
 			switch set.Type {
 			case PAN:
 				for i, v := range patterns {
-					validateRule[i] = pan{pattern: v}
+					validateRule[i] = &pan{pattern: v}
 				}
 			case OWASP:
 				for i, v := range patterns {
-					validateRule[i] = owasp{pattern: v}
+					validateRule[i] = &owasp{pattern: v}
 				}
 			}
 			cacheIn.Set(rule.Name, validateRule, cache.NoExpiration)
diff --git a/datafilter/owasp.go b/datafilter/owasp.go
index ffb0412..45a94a0 100644
--- a/datafilter/owasp.go
+++ b/datafilter/owasp.go
@@ -1,20 +1,5 @@
 package datafilter
 
-import "regexp"
-
 type owasp struct {
 	pattern
 }
-
-func (o owasp) Validate(data *string) bool {
-	matched, _ := regexp.MatchString(o.Rule, *data)
-	return matched
-}
-
-func (o owasp) ToString() string {
-	return o.Name + " " + o.Message
-}
-
-func (o owasp) Disable() bool {
-	return o.IsDisabled
-}
diff --git a/datafilter/pan.go b/datafilter/pan.go
index 72e5cfd..6d58967 100644
--- a/datafilter/pan.go
+++ b/datafilter/pan.go
@@ -9,7 +9,7 @@ type pan struct {
 	pattern
 }
 
-func (p pan) Validate(data *string) bool {
+func (p *pan) Validate(data *string) bool {
 	dataWithoutSpace := strings.ReplaceAll(*data, " ", "")
 	r := regexp.MustCompile(p.Rule)
 	matchList := r.FindAllString(dataWithoutSpace, -1)
@@ -21,11 +21,3 @@ func (p pan) Validate(data *string) bool {
 
 	return false
 }
-
-func (p pan) ToString() string {
-	return p.Name + " " + p.Message
-}
-
-func (p pan) Disable() bool {
-	return p.IsDisabled
-}