diff --git a/.github/workflows/coding-standard.yml b/.github/workflows/coding-standard.yml
index 3b10a080..6f51014d 100644
--- a/.github/workflows/coding-standard.yml
+++ b/.github/workflows/coding-standard.yml
@@ -12,8 +12,8 @@ jobs:
         uses: shivammathur/setup-php@master
         with:
           php-version: 7.2
+      - run: composer global require narrowspark/coding-standard:3.1.0 --no-interaction --prefer-dist --no-progress --profile --no-suggest --optimize-autoloader
       - name: 'lint php code'
         run: |
-          composer global require narrowspark/coding-standard:3.1.0 --no-interaction --prefer-dist --no-progress --profile --no-suggest --optimize-autoloader
           cd $GITHUB_WORKSPACE
           /home/runner/.composer/vendor/bin/php-cs-fixer fix -v --dry-run --stop-on-violation
diff --git a/.github/workflows/static-analyze-phpstan.yml b/.github/workflows/static-analyze-phpstan.yml
index 493538c3..889f719d 100644
--- a/.github/workflows/static-analyze-phpstan.yml
+++ b/.github/workflows/static-analyze-phpstan.yml
@@ -12,7 +12,6 @@ jobs:
         uses: shivammathur/setup-php@master
         with:
           php-version: 7.2
+      - run: composer install
       - name: 'analyze php code'
-        run: |
-          composer install --no-interaction --prefer-dist --no-progress --profile --no-suggest
-          composer phpstan
+        run: composer phpstan
diff --git a/composer.json b/composer.json
index 8fafea9f..f52e3e7f 100644
--- a/composer.json
+++ b/composer.json
@@ -92,6 +92,8 @@
         "infection": "infection",
         "test-common": "phpunit --testsuite=\"Narrowspark Automatic Common Test Suite\"",
         "test-automatic": "phpunit --testsuite=\"Narrowspark Automatic Test Suite\"",
+        "test-prefetcher": "phpunit --testsuite=\"Narrowspark Automatic Prefetcher Test Suite\"",
+        "test-security": "phpunit --testsuite=\"Narrowspark Automatic Security Test Suite\"",
         "changelog": "changelog-generator generate --config=\".changelog\" --file --prepend",
         "auto-scripts": {
 
diff --git a/src/Prefetcher/Plugin.php b/src/Prefetcher/Plugin.php
index 6ec8d530..d1941104 100644
--- a/src/Prefetcher/Plugin.php
+++ b/src/Prefetcher/Plugin.php
@@ -19,13 +19,10 @@
 use Composer\Console\Application;
 use Composer\DependencyResolver\Pool;
 use Composer\EventDispatcher\EventSubscriberInterface;
-use Composer\Installer;
 use Composer\Installer\InstallerEvent;
 use Composer\Installer\InstallerEvents;
 use Composer\Installer\PackageEvents;
-use Composer\Installer\SuggestedPackagesReporter;
 use Composer\IO\IOInterface;
-use Composer\IO\NullIO;
 use Composer\Package\BasePackage;
 use Composer\Plugin\PluginEvents;
 use Composer\Plugin\PluginInterface;
@@ -379,7 +376,7 @@ private function getErrorMessage(): ?string
     }
 
     /**
-     * Extend the composer object with some automatic settings.
+     * Extend the composer object with some automatic prefetcher settings.
      *
      * @param array                                                        $backtrace
      * @param \Narrowspark\Automatic\Prefetcher\Contract\LegacyTagsManager $tagsManager
@@ -388,16 +385,6 @@ private function getErrorMessage(): ?string
      */
     private function extendComposer($backtrace, LegacyTagsManagerContract $tagsManager): void
     {
-        foreach ($backtrace as $trace) {
-            if (isset($trace['object']) && $trace['object'] instanceof Installer) {
-                /** @var \Composer\Installer $installer */
-                $installer = $trace['object'];
-                $installer->setSuggestedPackagesReporter(new SuggestedPackagesReporter(new NullIO()));
-
-                break;
-            }
-        }
-
         foreach ($backtrace as $trace) {
             if (! isset($trace['object']) || ! isset($trace['args'][0])) {
                 continue;
diff --git a/src/Security/Audit.php b/src/Security/Audit.php
index 53f9cd68..f8b58518 100644
--- a/src/Security/Audit.php
+++ b/src/Security/Audit.php
@@ -25,13 +25,13 @@
 final class Audit
 {
     /** @var string */
-    private const SECURITY_ADVISORIES_BASE_URL = 'https://raw.githubusercontent.com/narrowspark/security-advisories/master/';
+    public const SECURITY_ADVISORIES_BASE_URL = 'https://raw.githubusercontent.com/narrowspark/security-advisories/master/';
 
     /** @var string */
-    private const SECURITY_ADVISORIES_SHA = 'security-advisories-sha';
+    public const SECURITY_ADVISORIES_SHA = 'security-advisories-sha';
 
     /** @var string */
-    private const SECURITY_ADVISORIES = 'security-advisories.json';
+    public const SECURITY_ADVISORIES = 'security-advisories.json';
 
     /**
      * A Filesystem instance.
@@ -61,18 +61,27 @@ final class Audit
      */
     private $downloader;
 
+    /**
+     * Sha of the security security-advisories.json.
+     *
+     * @var string
+     */
+    private $sha;
+
     /**
      * Create a new Audit instance.
      *
      * @param string                                              $composerVendorPath
      * @param \Narrowspark\Automatic\Security\Contract\Downloader $downloader
+     * @param string                                              $sha
      */
-    public function __construct(string $composerVendorPath, DownloaderContract $downloader)
+    public function __construct(string $composerVendorPath, DownloaderContract $downloader, string $sha)
     {
         $this->composerVendorPath = $composerVendorPath;
         $this->downloader = $downloader;
         $this->versionParser = new VersionParser();
         $this->filesystem = new Filesystem();
+        $this->sha = $sha;
     }
 
     /**
@@ -153,8 +162,6 @@ public function checkLock(string $lock): array
      */
     public function getSecurityAdvisories(?IOInterface $io = null): array
     {
-        $sha = $this->downloader->download(self::SECURITY_ADVISORIES_BASE_URL . self::SECURITY_ADVISORIES_SHA);
-
         $narrowsparkAutomaticPath = $this->composerVendorPath . \DIRECTORY_SEPARATOR . 'narrowspark' . \DIRECTORY_SEPARATOR . 'automatic' . \DIRECTORY_SEPARATOR;
 
         if (! $this->filesystem->exists($narrowsparkAutomaticPath)) {
@@ -167,7 +174,7 @@ public function getSecurityAdvisories(?IOInterface $io = null): array
         if ($this->filesystem->exists($securityAdvisoriesShaPath)) {
             $oldSha = \file_get_contents($securityAdvisoriesShaPath);
 
-            if ($oldSha === $sha) {
+            if ($oldSha === $this->sha) {
                 return \json_decode((string) \file_get_contents($securityAdvisoriesPath), true);
             }
         }
@@ -178,10 +185,10 @@ public function getSecurityAdvisories(?IOInterface $io = null): array
 
         $securityAdvisories = $this->downloader->download(self::SECURITY_ADVISORIES_BASE_URL . self::SECURITY_ADVISORIES);
 
-        $this->filesystem->dumpFile($securityAdvisoriesShaPath, $sha);
+        $this->filesystem->dumpFile($securityAdvisoriesShaPath, $this->sha);
         $this->filesystem->dumpFile($securityAdvisoriesPath, $securityAdvisories);
 
-        return \json_decode((string) \file_get_contents($securityAdvisoriesPath), true);
+        return \json_decode($securityAdvisories, true);
     }
 
     /**
diff --git a/src/Security/Command/AuditCommand.php b/src/Security/Command/AuditCommand.php
index 95301dbc..5c5bb745 100644
--- a/src/Security/Command/AuditCommand.php
+++ b/src/Security/Command/AuditCommand.php
@@ -74,8 +74,20 @@ protected function execute(InputInterface $input, OutputInterface $output): int
             $downloader->setTimeout((int) $timeout);
         }
 
+        try {
+            $output->write('Narrowspark Automatic Security Audit is checking for internet connection...', true, OutputInterface::VERBOSITY_VERBOSE);
+
+            $sha = $downloader->download(Audit::SECURITY_ADVISORIES_BASE_URL . Audit::SECURITY_ADVISORIES_SHA);
+        } catch (RuntimeException $exception) {
+            $output->write('Connecting to github.com failed.');
+
+            $downloader = $timeout = null;
+
+            return 1;
+        }
+
         $config = Factory::createConfig(new NullIO());
-        $audit = new Audit(\rtrim($config->get('vendor-dir'), '/'), $downloader);
+        $audit = new Audit(\rtrim($config->get('vendor-dir'), '/'), $downloader, $sha);
 
         /** @var null|string $composerFile */
         $composerFile = $input->getOption('composer-lock');
diff --git a/src/Security/Contract/Downloader.php b/src/Security/Contract/Downloader.php
index e34c707d..adcabeae 100644
--- a/src/Security/Contract/Downloader.php
+++ b/src/Security/Contract/Downloader.php
@@ -29,6 +29,8 @@ public function setTimeout(int $timeout): void;
      *
      * @param string $url
      *
+     * @throws \Narrowspark\Automatic\Security\Contract\Exception\RuntimeException
+     *
      * @return string
      */
     public function download(string $url): string;
diff --git a/src/Security/Plugin.php b/src/Security/Plugin.php
index 2f5b88e7..6c6cba30 100644
--- a/src/Security/Plugin.php
+++ b/src/Security/Plugin.php
@@ -26,6 +26,7 @@
 use Composer\Script\Event;
 use Composer\Script\ScriptEvents as ComposerScriptEvents;
 use FilesystemIterator;
+use Narrowspark\Automatic\Security\Contract\Downloader;
 use Narrowspark\Automatic\Security\Contract\Exception\RuntimeException;
 use Narrowspark\Automatic\Security\Downloader\ComposerDownloader;
 use Narrowspark\Automatic\Security\Downloader\CurlDownloader;
@@ -85,6 +86,13 @@ final class Plugin implements Capable, EventSubscriberInterface, PluginInterface
      */
     private static $activated = true;
 
+    /**
+     * Sha of the security security-advisories.json.
+     *
+     * @var string
+     */
+    private $securitySha;
+
     /**
      * {@inheritdoc}
      */
@@ -107,11 +115,25 @@ public static function getSubscribedEvents(): array
      */
     public function activate(Composer $composer, IOInterface $io): void
     {
-        if (($errorMessage = $this->getErrorMessage()) !== null) {
+        if (\extension_loaded('curl')) {
+            $downloader = new CurlDownloader();
+        } else {
+            $downloader = new ComposerDownloader();
+        }
+
+        $extra = $composer->getPackage()->getExtra();
+
+        if (isset($extra[self::COMPOSER_EXTRA_KEY]['timeout'])) {
+            $downloader->setTimeout($extra[self::COMPOSER_EXTRA_KEY]['timeout']);
+        }
+
+        if (($errorMessage = $this->getErrorMessage($io, $downloader)) !== null) {
             self::$activated = false;
 
             $io->writeError('<warning>Narrowspark Automatic Security Audit has been disabled. ' . $errorMessage . '</warning>');
 
+            $downloader = $extra = null;
+
             return;
         }
 
@@ -127,19 +149,7 @@ public function activate(Composer $composer, IOInterface $io): void
         $this->composer = $composer;
         $this->io = $io;
 
-        if (\extension_loaded('curl')) {
-            $downloader = new CurlDownloader();
-        } else {
-            $downloader = new ComposerDownloader();
-        }
-
-        $extra = $composer->getPackage()->getExtra();
-
-        if (isset($extra[self::COMPOSER_EXTRA_KEY]['timeout'])) {
-            $downloader->setTimeout($extra[self::COMPOSER_EXTRA_KEY]['timeout']);
-        }
-
-        $this->audit = new Audit(\rtrim($composer->getConfig()->get('vendor-dir'), '/'), $downloader);
+        $this->audit = new Audit(\rtrim($composer->getConfig()->get('vendor-dir'), '/'), $downloader, $this->securitySha);
 
         $this->securityAdvisories = $this->audit->getSecurityAdvisories($io);
     }
@@ -231,9 +241,12 @@ public function auditComposerLock(Event $event): void
     /**
      * Check if automatic can be activated.
      *
+     * @param \Composer\IO\IOInterface $io
+     * @param Downloader               $downloader
+     *
      * @return null|string
      */
-    private function getErrorMessage(): ?string
+    private function getErrorMessage(IOInterface $io, Downloader $downloader): ?string
     {
         // @codeCoverageIgnoreStart
         if (\version_compare(self::getComposerVersion(), '1.7.0', '<')) {
@@ -241,6 +254,14 @@ private function getErrorMessage(): ?string
         }
         // @codeCoverageIgnoreEnd
 
+        try {
+            $io->writeError('Narrowspark Automatic Security Audit is checking for internet connection...', true, IOInterface::VERBOSE);
+
+            $this->securitySha = $downloader->download(Audit::SECURITY_ADVISORIES_BASE_URL . Audit::SECURITY_ADVISORIES_SHA);
+        } catch (RuntimeException $exception) {
+            return 'Connecting to github.com failed.';
+        }
+
         return null;
     }
 
diff --git a/tests/Security/AuditTest.php b/tests/Security/AuditTest.php
index e8d19562..a68b7b00 100644
--- a/tests/Security/AuditTest.php
+++ b/tests/Security/AuditTest.php
@@ -40,7 +40,9 @@ protected function setUp(): void
 
         $this->path = __DIR__ . 'audit';
 
-        $this->audit = new Audit($this->path, new ComposerDownloader());
+        $downloader = new ComposerDownloader();
+
+        $this->audit = new Audit($this->path, $downloader, $downloader->download(Audit::SECURITY_ADVISORIES_BASE_URL . Audit::SECURITY_ADVISORIES_SHA));
     }
 
     /**
diff --git a/tests/Security/PluginTest.php b/tests/Security/PluginTest.php
index f0cdeffb..52a28f09 100644
--- a/tests/Security/PluginTest.php
+++ b/tests/Security/PluginTest.php
@@ -84,6 +84,10 @@ public function testActivate(): void
             ->once()
             ->with('Downloading the Security Advisories database...', true, IOInterface::VERBOSE);
 
+        $this->ioMock->shouldReceive('writeError')
+            ->once()
+            ->with('Narrowspark Automatic Security Audit is checking for internet connection...', true, IOInterface::VERBOSE);
+
         $this->securityPlugin->activate($this->composerMock, $this->ioMock);
     }
 
@@ -149,7 +153,9 @@ public function testAuditPackage(): void
             ->once()
             ->andReturn($operationMock);
 
-        $audit = new Audit($this->tmpFolder, new ComposerDownloader());
+        $downloader = new ComposerDownloader();
+
+        $audit = new Audit($this->tmpFolder, $downloader, $downloader->download(Audit::SECURITY_ADVISORIES_BASE_URL . Audit::SECURITY_ADVISORIES_SHA));
 
         NSA::setProperty($this->securityPlugin, 'audit', $audit);
         NSA::setProperty($this->securityPlugin, 'securityAdvisories', $audit->getSecurityAdvisories());
@@ -193,7 +199,9 @@ public function testAuditPackageWithUpdate(): void
             ->once()
             ->andReturn($operationMock);
 
-        $audit = new Audit($this->tmpFolder, new ComposerDownloader());
+        $downloader = new ComposerDownloader();
+
+        $audit = new Audit($this->tmpFolder, $downloader, $downloader->download(Audit::SECURITY_ADVISORIES_BASE_URL . Audit::SECURITY_ADVISORIES_SHA));
 
         NSA::setProperty($this->securityPlugin, 'audit', $audit);
         NSA::setProperty($this->securityPlugin, 'securityAdvisories', $audit->getSecurityAdvisories());
@@ -207,7 +215,9 @@ public function testAuditComposerLock(): void
     {
         \putenv('COMPOSER=' . __DIR__ . \DIRECTORY_SEPARATOR . 'Fixture' . \DIRECTORY_SEPARATOR . 'symfony_2.5.2_composer.json');
 
-        $audit = new Audit($this->tmpFolder, new ComposerDownloader());
+        $downloader = new ComposerDownloader();
+
+        $audit = new Audit($this->tmpFolder, $downloader, $downloader->download(Audit::SECURITY_ADVISORIES_BASE_URL . Audit::SECURITY_ADVISORIES_SHA));
 
         NSA::setProperty($this->securityPlugin, 'audit', $audit);