diff --git a/nucypher/characters/unlawful.py b/nucypher/characters/unlawful.py
index b4715e3e7..62461418f 100644
--- a/nucypher/characters/unlawful.py
+++ b/nucypher/characters/unlawful.py
@@ -72,14 +72,14 @@ class Vladimir(Ursula):
     @classmethod
     def attach_transacting_key(cls, blockchain):
         """
-        Upload Vladimir's ETH keys to the keychain via web3 / RPC.
+        Upload Vladimir's ETH keys to the keychain via web3.
         """
         try:
             password = INSECURE_DEVELOPMENT_PASSWORD
-            blockchain.interface.w3.personal.importRawKey(private_key=cls.fraud_key, passphrase=password)
+            blockchain.interface.w3.provider.ethereum_tester.add_account(cls.fraud_key, password=password)
         except (ValidationError, ):
             # check if Vlad's key is already on the keyring...
-            if cls.fraud_address in blockchain.interface.w3.personal.listAccounts:
+            if cls.fraud_address in blockchain.interface.w3.eth.accounts:
                 return True
             else:
                 raise
diff --git a/nucypher/crypto/powers.py b/nucypher/crypto/powers.py
index a590b4341..39198470b 100644
--- a/nucypher/crypto/powers.py
+++ b/nucypher/crypto/powers.py
@@ -141,7 +141,7 @@ class BlockchainPower(CryptoPowerUp):
         """
         Deletes the blockchain power and locks the account.
         """
-        self.blockchain.interface.w3.personal.lockAccount(self.account)
+        # self.blockchain.interface.w3.personal.lockAccount(self.account) # TODO: Implement client support
 
 
 class KeyPairBasedPower(CryptoPowerUp):
diff --git a/nucypher/network/server.py b/nucypher/network/server.py
index e013e9a3b..7a05e793a 100644
--- a/nucypher/network/server.py
+++ b/nucypher/network/server.py
@@ -193,7 +193,7 @@ def make_rest_app(
                     # TODO: Include data about caller?
                     # TODO: Account for possibility that stamp, rather than interface, was bad.
                     # TODO: Maybe also record the bytes representation separately to disk?
-                    message = "Suspicious Activity: Discovered node with bad signature: {}.  Announced via REST."
+                    message = f"Suspicious Activity: Discovered node with bad signature: {node}.  Announced via REST."
                     log.warn(message)
                     suspicious_activity_tracker['vladimirs'].append(node)