diff --git a/attack/attack.go b/attack/attack.go
index 2e6c7860d..45e2ead55 100644
--- a/attack/attack.go
+++ b/attack/attack.go
@@ -29,7 +29,7 @@ const (
 type Attack struct {
 	AttackEnabled        bool
 	attackType           AttackType
-	ConsensusIdThreshold int
+	ConsensusIdThreshold uint32
 	readyByConsensus     bool
 	log                  log.Logger // Log utility
 }
@@ -37,8 +37,8 @@ type Attack struct {
 var attack *Attack
 var once sync.Once
 
-// GetAttackModel returns attack model by using singleton pattern.
-func GetAttackModel() *Attack {
+// GetInstance returns attack model by using singleton pattern.
+func GetInstance() *Attack {
 	once.Do(func() {
 		attack = &Attack{}
 		attack.Init()
@@ -55,7 +55,7 @@ func (attack *Attack) SetAttackEnabled(AttackEnabled bool) {
 	attack.AttackEnabled = AttackEnabled
 	if AttackEnabled {
 		attack.attackType = AttackType(rand.Intn(3))
-		attack.ConsensusIdThreshold = ConsensusIdThresholdMin + rand.Intn(ConsensusIdThresholdMax-ConsensusIdThresholdMin)
+		attack.ConsensusIdThreshold = uint32(ConsensusIdThresholdMin + rand.Intn(ConsensusIdThresholdMax-ConsensusIdThresholdMin))
 	}
 }
 
@@ -63,9 +63,14 @@ func (attack *Attack) SetLogger(log log.Logger) {
 	attack.log = log
 }
 
+func (attack *Attack) Run() {
+	attack.NodeKilledByItSelf()
+	attack.DelayResponse()
+}
+
 // NodeKilledByItSelf runs killing itself attack
 func (attack *Attack) NodeKilledByItSelf() {
-	if !attack.AttackEnabled || attack.attackType != DelayResponse || !attack.readyByConsensus {
+	if !attack.AttackEnabled || attack.attackType != KilledItself || !attack.readyByConsensus {
 		return
 	}
 
@@ -84,7 +89,7 @@ func (attack *Attack) DelayResponse() {
 	}
 }
 
-func (attack *Attack) UpdateConsensusReady(consensusId int) {
+func (attack *Attack) UpdateConsensusReady(consensusId uint32) {
 	if consensusId > attack.ConsensusIdThreshold {
 		attack.readyByConsensus = true
 	}
diff --git a/benchmark.go b/benchmark.go
index 8c8c37626..0667ece5b 100644
--- a/benchmark.go
+++ b/benchmark.go
@@ -102,7 +102,7 @@ func main() {
 	rand.Seed(int64(time.Now().Nanosecond()))
 
 	// Attack determination.
-	attack.GetAttackModel().SetAttackEnabled(attackDetermination(*attackedMode))
+	attack.GetInstance().SetAttackEnabled(attackDetermination(*attackedMode))
 
 	config := readConfigFile(*configFile)
 	shardId := getShardId(*ip, *port, &config)
@@ -122,7 +122,7 @@ func main() {
 
 	node := node.NewNode(&consensus)
 	// Set logger to attack model.
-	attack.GetAttackModel().SetLogger(consensus.Log)
+	attack.GetInstance().SetLogger(consensus.Log)
 
 	clientPeer := getClientPeer(&config)
 	// If there is a client configured in the node list.
diff --git a/consensus/consensus_validator.go b/consensus/consensus_validator.go
index caf23d232..a8c4d0ee3 100644
--- a/consensus/consensus_validator.go
+++ b/consensus/consensus_validator.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"encoding/binary"
 	"encoding/gob"
+	"harmony-benchmark/attack"
 	"harmony-benchmark/blockchain"
 	"harmony-benchmark/p2p"
 	"regexp"
@@ -234,6 +235,9 @@ func (consensus *Consensus) processChallengeMessage(payload []byte) {
 		// If I received previous block (which haven't been processed. I will roll up to current block if everything checks.
 	}
 
+	// Update readyByConsensus for attack.
+	attack.GetInstance().UpdateConsensusReady(consensusId)
+
 	// TODO: verify aggregated commits with real schnor cosign verification
 
 	// TODO: return the signature(response) to leader
diff --git a/p2p/peer.go b/p2p/peer.go
index 3e32a11e7..e63df3ac9 100644
--- a/p2p/peer.go
+++ b/p2p/peer.go
@@ -80,7 +80,7 @@ func sendWithSocketClient(ip, port string, message []byte) (res string) {
 // Send a message to another node with given port.
 func send(ip, port string, message []byte) (returnMessage string) {
 	// Add attack code here.
-	attack.GetAttackModel().DelayResponse()
+	attack.GetInstance().Run()
 
 	sendWithSocketClient(ip, port, message)
 	return