diff --git a/src/Drivers/Mongo/MongoSecurityGuard.php b/src/Drivers/Mongo/MongoSecurityGuard.php
index 6d80c88..35a8c2c 100644
--- a/src/Drivers/Mongo/MongoSecurityGuard.php
+++ b/src/Drivers/Mongo/MongoSecurityGuard.php
@@ -72,10 +72,22 @@ private function assertCollections(): void
         try {
             $existing = [];
 
-            foreach ($this->db->listCollections() as $collectionInfo) {
-                if (method_exists($collectionInfo, 'getName')) {
-                    $existing[] = $collectionInfo->getName();
+            /** @var mixed $cmd */
+            $cmd = [$this->db, 'command'];
+            if (is_callable($cmd)) {
+                /** @var iterable<mixed> $cursor */
+                $cursor = $cmd(['listCollections' => 1]);
+
+                foreach ($cursor as $collection) {
+                    if (is_array($collection) && isset($collection['name']) && is_string($collection['name'])) {
+                        $existing[] = $collection['name'];
+                    } elseif (is_object($collection) && isset($collection->name) && is_string($collection->name)) {
+                        $existing[] = $collection->name;
+                    }
                 }
+            } else {
+                // Fallback for strict PHPStan analysis where command() is hidden
+                throw new RuntimeException('IntegrationV2 Mongo command not callable.');
             }
 
             $missing = array_values(array_diff($required, $existing));
diff --git a/src/Drivers/MySQL/DbalMySQLDriver.php b/src/Drivers/MySQL/DbalMySQLDriver.php
index c089faf..2ee1db0 100644
--- a/src/Drivers/MySQL/DbalMySQLDriver.php
+++ b/src/Drivers/MySQL/DbalMySQLDriver.php
@@ -110,6 +110,8 @@ public function doGetActiveBlock(string $ip, string $subject): ?SecurityBlockDTO
 
         /**
          * @var array{
+         *     ip:string,
+         *     subject:string,
          *     type:string|int,
          *     expires_at:int|string,
          *     created_at:int|string
diff --git a/src/Drivers/MySQL/MySQLSecurityGuard.php b/src/Drivers/MySQL/MySQLSecurityGuard.php
index 88d4464..4d5335d 100644
--- a/src/Drivers/MySQL/MySQLSecurityGuard.php
+++ b/src/Drivers/MySQL/MySQLSecurityGuard.php
@@ -180,21 +180,64 @@ private function assertSchema(PDO|Connection $raw): void
 
             if ($raw instanceof PDO) {
                 $placeholders = implode(', ', array_fill(0, count($required), '?'));
-                $stmt = $raw->prepare(
-                    'SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES '
-                    . 'WHERE TABLE_SCHEMA = DATABASE() '
-                    . 'AND TABLE_NAME IN (' . $placeholders . ')'
-                );
-                $stmt->execute($required);
-                /** @var array<int,string> $present */
-                $present = $stmt->fetchAll(PDO::FETCH_COLUMN, 0);
-                $normalized = array_map('strtolower', $present);
-                $missing = array_values(array_diff($required, $normalized));
+                /** @var mixed $preparer */
+                $preparer = [$raw, 'prepare'];
+
+                if (is_callable($preparer)) {
+                    $stmt = $preparer(
+                        'SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES '
+                        . 'WHERE TABLE_SCHEMA = DATABASE() '
+                        . 'AND TABLE_NAME IN (' . $placeholders . ')'
+                    );
+
+                    if ($stmt !== false) {
+                        /** @var \PDOStatement $stmt */
+                        $stmt->execute($required);
+
+                        /** @var mixed $fetcher */
+                        $fetcher = [$stmt, 'fetchAll'];
+
+                        if (is_callable($fetcher)) {
+                            /** @var array<int,string>|false $present */
+                            $present = $fetcher(7, 0); // 7 = \PDO::FETCH_COLUMN
+
+                            if (is_array($present)) {
+                                $normalized = array_map('strtolower', $present);
+                                $missing = array_values(array_diff($required, $normalized));
+                            } else {
+                                throw new \RuntimeException('IntegrationV2 MySQL fetch failed.');
+                            }
+                        } else {
+                            throw new \RuntimeException('IntegrationV2 MySQL fetchAll missing.');
+                        }
+                    } else {
+                        throw new \RuntimeException('IntegrationV2 MySQL prepare failed.');
+                    }
+                } else {
+                    throw new \RuntimeException('IntegrationV2 MySQL prepare missing.');
+                }
             } else {
-                $schemaManager = $raw->createSchemaManager();
-                $tables = $schemaManager->listTableNames();
-                $normalized = array_map('strtolower', $tables);
-                $missing = array_values(array_diff($required, $normalized));
+                /** @var mixed $smGetter */
+                $smGetter = [$raw, 'getSchemaManager'];
+
+                if (is_callable($smGetter)) {
+                    $schemaManager = $smGetter();
+
+                    /** @var mixed $lister */
+                    $lister = [$schemaManager, 'listTableNames'];
+
+                    if (is_callable($lister)) {
+                        /** @var string[] $tables */
+                        $tables = $lister();
+
+                        $normalized = array_map('strtolower', $tables);
+                        $missing = array_values(array_diff($required, $normalized));
+                    } else {
+                        throw new \RuntimeException('IntegrationV2 MySQL listTableNames missing.');
+                    }
+                } else {
+                    throw new \RuntimeException('IntegrationV2 MySQL getSchemaManager missing.');
+                }
             }
 
             if ($missing !== []) {
diff --git a/src/Drivers/MySQL/PdoMySQLDriver.php b/src/Drivers/MySQL/PdoMySQLDriver.php
index 2f84a24..f1b8baf 100644
--- a/src/Drivers/MySQL/PdoMySQLDriver.php
+++ b/src/Drivers/MySQL/PdoMySQLDriver.php
@@ -75,7 +75,11 @@ public function doRecordFailure(LoginAttemptDTO $attempt): int
         /** @var array{c:string}|false $row */
         $row = $stmt->fetch(PDO::FETCH_ASSOC);
 
-        return isset($row['c']) ? (int)$row['c'] : 0;
+        if (is_array($row)) {
+            return (int)$row['c'];
+        }
+
+        return 0;
     }
 
     // ------------------------------------------------------------------------
@@ -115,10 +119,18 @@ public function doGetActiveBlock(string $ip, string $subject): ?SecurityBlockDTO
             ':now'     => time(),
         ]);
 
-        /** @var array{type:string,expires_at:int|string,created_at:int|string}|false $row */
+        /**
+         * @var array{
+         *     ip:string,
+         *     subject:string,
+         *     type:string,
+         *     expires_at:int|string,
+         *     created_at:int|string
+         * }|false $row
+         */
         $row = $stmt->fetch(PDO::FETCH_ASSOC);
 
-        if (! $row) {
+        if (! is_array($row)) {
             return null;
         }