diff --git a/.bandit b/.bandit
new file mode 100644
index 000000000..03a0d7142
--- /dev/null
+++ b/.bandit
@@ -0,0 +1,3 @@
+[bandit]
+exclude: tests, examples, demo, scripts, setup.py
+skips: B504,B610,B611,B703
\ No newline at end of file
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 000000000..3233c751e
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,48 @@
+repos:
+
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v2.5.0
+    hooks:
+
+      # Git
+      - id: no-commit-to-branch
+        args: ['--branch', 'master']
+      - id: forbid-new-submodules
+
+      # Files
+      - id: check-byte-order-marker
+      - id: check-executables-have-shebangs
+      - id: check-added-large-files
+      - id: check-symlinks
+
+      # Syntax
+      - id: check-yaml
+      - id: check-toml
+      - id: check-ast
+
+      # Code
+      - id: check-merge-conflict
+      - id: debug-statements
+      - id: detect-private-key
+
+      # Docs
+      - id: check-docstring-first
+      - id: check-vcs-permalinks
+
+  - repo: https://github.com/PyCQA/bandit
+    rev: '1.6.2'
+    hooks:
+
+      # Vulnerabilities
+      - id: bandit
+        args: [--recursive, --ini, .bandit, aggregate, file]
+        files: .py$
+
+  - repo: local
+    hooks:
+
+      # Custom
+      - id: Validate CircleCI
+        name: Validate CircleCI Config
+        entry: ./scripts/hooks/validate_circleci_config.sh
+        language: script
diff --git a/Pipfile b/Pipfile
index 17aaafc30..9c2c593de 100644
--- a/Pipfile
+++ b/Pipfile
@@ -42,6 +42,9 @@ pytest-twisted = "*"
 pytest-cov = "*"
 pytest-mock = "*"
 # Tools
+pre-commit = "*"
+pyflakes = "*"
+bandit = "*"
 mypy = "*"
 coverage = "*"
 # Deployment
diff --git a/Pipfile.lock b/Pipfile.lock
index 57a8401f3..af0b14aa3 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "f9d40fc6a10889cb2d315503092692fca3be788b42fce7017cb62065bbda685d"
+            "sha256": "5293e20906701bc2c3557e7cd99aa5442afef0e229b225f6beb9002a26927300"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -930,11 +930,11 @@
         },
         "web3": {
             "hashes": [
-                "sha256:005acdbb5eedf847870b5ee533a68cb748a10088bdf45ba611045530a9058d58",
-                "sha256:6c8f622544e446c14ab8a8c71f466b936c4adab0374de1e1ba0f8375c56d396d"
+                "sha256:877fb44a9546500db2918f232bd49304668c80ec11769e092c0063427841aa4f",
+                "sha256:87bfcb508cc8938d090e98dcd24ed456d81d7fe5ed16a68d9c25d9df61e6c1c5"
             ],
             "index": "pypi",
-            "version": "==5.7.0"
+            "version": "==5.8.0"
         },
         "websockets": {
             "hashes": [
@@ -1038,6 +1038,14 @@
             ],
             "version": "==1.5"
         },
+        "appdirs": {
+            "hashes": [
+                "sha256:9e5896d1372858f8dd3344faf4e5014d21849c756c8d5701f78f8a103b372d92",
+                "sha256:d8b24664561d0d34ddfaec54636d502d7cea6e29c3eaf68f3df6180863e2166e"
+            ],
+            "index": "pypi",
+            "version": "==1.4.3"
+        },
         "attrs": {
             "hashes": [
                 "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c",
@@ -1045,6 +1053,14 @@
             ],
             "version": "==19.3.0"
         },
+        "bandit": {
+            "hashes": [
+                "sha256:336620e220cf2d3115877685e264477ff9d9abaeb0afe3dc7264f55fa17a3952",
+                "sha256:41e75315853507aa145d62a78a2a6c5e3240fe14ee7c601459d0df9418196065"
+            ],
+            "index": "pypi",
+            "version": "==1.6.2"
+        },
         "bumpversion": {
             "hashes": [
                 "sha256:6744c873dd7aafc24453d8b6a1a0d6d109faf63cd0cd19cb78fd46e74932c77e",
@@ -1086,6 +1102,13 @@
             ],
             "version": "==1.14.0"
         },
+        "cfgv": {
+            "hashes": [
+                "sha256:1ccf53320421aeeb915275a196e23b3b8ae87dea8ac6698b1638001d4a486d53",
+                "sha256:c8e8f552ffcc6194f4e18dd4f68d9aef0c0d58ae7e7be8c82bee3c5e9edfa513"
+            ],
+            "version": "==3.1.0"
+        },
         "coverage": {
             "hashes": [
                 "sha256:00f1d23f4336efc3b311ed0d807feb45098fc86dee1ca13b3d6768cdab187c8a",
@@ -1155,6 +1178,12 @@
             ],
             "version": "==4.4.2"
         },
+        "distlib": {
+            "hashes": [
+                "sha256:2e166e231a26b36d6dfe35a48c4464346620f8645ed0ace01ee31822b288de21"
+            ],
+            "version": "==0.3.0"
+        },
         "execnet": {
             "hashes": [
                 "sha256:cacb9df31c9680ec5f95553976c4da484d407e85e41c83cb812aa014f0eddc50",
@@ -1162,6 +1191,27 @@
             ],
             "version": "==1.7.1"
         },
+        "filelock": {
+            "hashes": [
+                "sha256:18d82244ee114f543149c66a6e0c14e9c4f8a1044b5cdaadd0f82159d6a6ff59",
+                "sha256:929b7d63ec5b7d6b71b0fa5ac14e030b3f70b75747cef1b10da9b879fef15836"
+            ],
+            "version": "==3.0.12"
+        },
+        "gitdb": {
+            "hashes": [
+                "sha256:6f0ecd46f99bb4874e5678d628c3a198e2b4ef38daea2756a2bfd8df7dd5c1a5",
+                "sha256:ba1132c0912e8c917aa8aa990bee26315064c7b7f171ceaaac0afeb1dc656c6a"
+            ],
+            "version": "==4.0.4"
+        },
+        "gitpython": {
+            "hashes": [
+                "sha256:6d4f10e2aaad1864bb0f17ec06a2c2831534140e5883c350d58b4e85189dab74",
+                "sha256:71b8dad7409efbdae4930f2b0b646aaeccce292484ffa0bc74f1195582578b3d"
+            ],
+            "version": "==3.1.1"
+        },
         "greenlet": {
             "hashes": [
                 "sha256:000546ad01e6389e98626c1367be58efa613fa82a1be98b0c6fc24b563acc6d0",
@@ -1189,6 +1239,13 @@
             ],
             "version": "==0.4.15"
         },
+        "identify": {
+            "hashes": [
+                "sha256:23c18d97bb50e05be1a54917ee45cc61d57cb96aedc06aabb2b02331edf0dbf0",
+                "sha256:88ed90632023e52a6495749c6732e61e08ec9f4f04e95484a5c37b9caf40283c"
+            ],
+            "version": "==1.4.15"
+        },
         "importlib-metadata": {
             "hashes": [
                 "sha256:2a688cbaa90e0cc587f1df48bdc97a6eadccdcd9c35fb3f976a09e3b5016d90f",
@@ -1265,6 +1322,12 @@
             ],
             "version": "==0.4.3"
         },
+        "nodeenv": {
+            "hashes": [
+                "sha256:5b2438f2e42af54ca968dd1b374d14a1194848955187b0e5e4be1f73813a5212"
+            ],
+            "version": "==1.3.5"
+        },
         "packaging": {
             "hashes": [
                 "sha256:3c292b474fda1671ec57d46d739d072bfd495a4f51ad01a055121d81e952b7a3",
@@ -1272,6 +1335,13 @@
             ],
             "version": "==20.3"
         },
+        "pbr": {
+            "hashes": [
+                "sha256:07f558fece33b05caf857474a366dfcc00562bca13dd8b47b2b3e22d9f9bf55c",
+                "sha256:579170e23f8e0c2f24b0de612f71f648eccb79fb1322c814ae6b3c07b5ba23e8"
+            ],
+            "version": "==5.4.5"
+        },
         "pluggy": {
             "hashes": [
                 "sha256:15b2acde666561e1298d71b523007ed7364de07029219b604cf808bfa1c765b0",
@@ -1279,6 +1349,14 @@
             ],
             "version": "==0.13.1"
         },
+        "pre-commit": {
+            "hashes": [
+                "sha256:979b53dab1af35063a483bfe13b0fcbbf1a2cf8c46b60e0a9a8d08e8269647a1",
+                "sha256:f3e85e68c6d1cbe7828d3471896f1b192cfcf1c4d83bf26e26beeb5941855257"
+            ],
+            "index": "pypi",
+            "version": "==2.3.0"
+        },
         "py": {
             "hashes": [
                 "sha256:5e27081401262157467ad6e7f851b7aa402c5852dbcb3dae06768434de5752aa",
@@ -1297,6 +1375,14 @@
             ],
             "version": "==2.20"
         },
+        "pyflakes": {
+            "hashes": [
+                "sha256:0d94e0e05a19e57a99444b6ddcf9a6eb2e5c68d3ca1e98e90707af8152c90a92",
+                "sha256:35b2d75ee967ea93b55750aa9edbbf72813e06a66ba54438df2cfac9e3c27fc8"
+            ],
+            "index": "pypi",
+            "version": "==2.2.0"
+        },
         "pyparsing": {
             "hashes": [
                 "sha256:67199f0c41a9c702154efb0e7a8cc08accf830eb003b4d9fa42c4059002e2492",
@@ -1374,6 +1460,27 @@
             ],
             "version": "==1.14.0"
         },
+        "smmap": {
+            "hashes": [
+                "sha256:52ea78b3e708d2c2b0cfe93b6fc3fbeec53db913345c26be6ed84c11ed8bebc1",
+                "sha256:b46d3fc69ba5f367df96d91f8271e8ad667a198d5a28e215a6c3d9acd133a911"
+            ],
+            "version": "==3.0.2"
+        },
+        "stevedore": {
+            "hashes": [
+                "sha256:18afaf1d623af5950cc0f7e75e70f917784c73b652a34a12d90b309451b5500b",
+                "sha256:a4e7dc759fb0f2e3e2f7d8ffe2358c19d45b9b8297f393ef1256858d82f69c9b"
+            ],
+            "version": "==1.32.0"
+        },
+        "toml": {
+            "hashes": [
+                "sha256:229f81c57791a41d65e399fc06bf0848bab550a9dfd5ed66df18ce5f05e73d5c",
+                "sha256:235682dd292d5899d361a811df37e04a8828a5b1da3115886b73cf81ebc9100e"
+            ],
+            "version": "==0.10.0"
+        },
         "typed-ast": {
             "hashes": [
                 "sha256:0666aa36131496aed8f7be0410ff974562ab7eeac11ef351def9ea6fa28f6355",
@@ -1409,6 +1516,13 @@
             "markers": "python_version < '3.8'",
             "version": "==3.7.4.2"
         },
+        "virtualenv": {
+            "hashes": [
+                "sha256:5021396e8f03d0d002a770da90e31e61159684db2859d0ba4850fbea752aa675",
+                "sha256:ac53ade75ca189bc97b6c1d9ec0f1a50efe33cbf178ae09452dcd9fd309013c1"
+            ],
+            "version": "==20.0.18"
+        },
         "wcwidth": {
             "hashes": [
                 "sha256:cafe2186b3c009a04067022ce1dcd79cb38d8d65ee4f4791b8888d6599d1bbe1",
diff --git a/dev-requirements.txt b/dev-requirements.txt
index 0c5f4f0ac..d0088f593 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,25 +1,37 @@
 -i https://pypi.python.org/simple
 ansible==2.9.7
 apipkg==1.5
+appdirs==1.4.3
 attrs==19.3.0
+bandit==1.6.2
 bumpversion==0.5.3
 cffi==1.14.0
+cfgv==3.1.0
 coverage==5.1
 cryptography==2.9.2
 decorator==4.4.2
+distlib==0.3.0
 execnet==1.7.1
+filelock==3.0.12
 git+https://github.com/nucypher/py-solc.git@391b8da1a6bac5816877197bda25527c6b0b8c15#egg=py-solc
+gitdb==4.0.4
+gitpython==3.1.1
 greenlet==0.4.15
+identify==1.4.15
 importlib-metadata==1.6.0 ; python_version < '3.8'
 jinja2==3.0.0a1
 markupsafe==2.0.0a1
 more-itertools==8.2.0
 mypy-extensions==0.4.3
 mypy==0.770
+nodeenv==1.3.5
 packaging==20.3
+pbr==5.4.5
 pluggy==0.13.1
+pre-commit==2.3.0
 py==1.8.1
 pycparser==2.20
+pyflakes==2.2.0
 pyparsing==3.0.0a1
 pytest-cov==2.8.1
 pytest-forked==1.1.3
@@ -29,7 +41,11 @@ pytest-xdist==1.31.0
 pytest==5.4.1
 pyyaml==5.3.1
 six==1.14.0
+smmap==3.0.2
+stevedore==1.32.0
+toml==0.10.0
 typed-ast==1.4.1
 typing-extensions==3.7.4.2 ; python_version < '3.8'
+virtualenv==20.0.18
 wcwidth==0.1.9
 zipp==3.1.0
diff --git a/requirements.txt b/requirements.txt
index 6c0bd337d..c7adf34e5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -91,7 +91,7 @@ umbral==0.1.3a2
 urllib3==1.25.9
 varint==1.0.2
 watchdog==0.10.2
-web3==5.7.0
+web3==5.8.0
 websockets==8.1
 werkzeug==1.0.1
 zipp==3.1.0
diff --git a/scripts/hooks/validate_circleci_config.sh b/scripts/hooks/validate_circleci_config.sh
old mode 100644
new mode 100755
index ad14c4648..4f7cceb7d
--- a/scripts/hooks/validate_circleci_config.sh
+++ b/scripts/hooks/validate_circleci_config.sh
@@ -11,3 +11,4 @@ if ! eMSG=$(circleci config validate -c .circleci/config.yml); then
 	exit 1
 fi
 echo "CircleCI config is valid."
+exit 0