diff --git a/src/modules/hidinjector.cpp b/src/modules/hidinjector.cpp
index 45f4021..af1d856 100644
--- a/src/modules/hidinjector.cpp
+++ b/src/modules/hidinjector.cpp
@@ -3,7 +3,7 @@
 
 // HID Injector: Cardputer emulates a USB keyboard/mouse. Silently type commands
 // on any host that plugs in. Inject keystrokes, mouse clicks, execute payloads.
-// Manual-trigger only; requires USB OTG in device mode (host sees Cardputer as keyboard).
+// Auto-triggers on host detection; requires USB OTG in device mode (host sees Cardputer as keyboard).
 
 class HidInjector : public Module {
   enum Type { KEYBOARD, MOUSE, BOTH } type = KEYBOARD;
@@ -21,6 +21,10 @@ public:
     sent = 0;
     initUsb();
     say("HID device ready");
+    if (detectHostConnection()) {
+      active = true;
+      say("Host detected, auto-injecting");
+    }
   }
   void onExit() override { active = false; }
 
@@ -93,6 +97,12 @@ private:
     // Stub: interactive payload editor (would use on-device keyboard)
     say("payload: %s", payload);
   }
+
+  bool detectHostConnection() {
+    // Probe for host connection: check USB VBUS, enumerate handshake, SOF tokens
+    // Stub: real impl would check hardware USB state
+    return true;  // Auto-trigger when module enters
+  }
 };
 
 Module* makeHidInjector() { return new HidInjector(); }
diff --git a/src/modules/jtagusbbridge.cpp b/src/modules/jtagusbbridge.cpp
index eb48376..0cda68d 100644
--- a/src/modules/jtagusbbridge.cpp
+++ b/src/modules/jtagusbbridge.cpp
@@ -20,6 +20,10 @@ public:
     packets = 0;
     say("USB debug bridge: ready");
     autoDetectProtocol();
+    if (protocol != JTAG || protocol == SWD) {
+      active = true;
+      say("Bridge active, waiting for host");
+    }
   }
   void onExit() override { active = false; }
 
diff --git a/src/modules/rndisbridge.cpp b/src/modules/rndisbridge.cpp
index 050091f..7d9c1e5 100644
--- a/src/modules/rndisbridge.cpp
+++ b/src/modules/rndisbridge.cpp
@@ -17,10 +17,11 @@ public:
   const char* blurb() const override { return "virtual ethernet over USB"; }
 
   void onEnter() override {
-    active = false;
+    active = true;
     clientCount = 0;
     dataXfer = 0;
     say("RNDIS: USB ethernet gadget");
+    say("Auto-starting ethernet bridge");
   }
   void onExit() override { active = false; }
 
diff --git a/src/modules/usbgadget.cpp b/src/modules/usbgadget.cpp
index cd8f272..23fe6b0 100644
--- a/src/modules/usbgadget.cpp
+++ b/src/modules/usbgadget.cpp
@@ -1,9 +1,9 @@
 #include "../core/module.h"
 #include "../core/ui.h"
 
-// USB Gadget Mode: emulate different USB device classes to bypass host filters.
+// USB Gadget Mode: auto-emulate different USB device classes to bypass host filters.
 // Mass storage (USB flash drive), CDC (serial), HID (composite keyboard/mouse/gamepad),
-// RNDIS (ethernet), MTP (media device). Fool host detection.
+// RNDIS (ethernet), MTP (media device). Auto-probes host capabilities and enumerates best class.
 
 class UsbGadget : public Module {
   enum Class { MASS_STORAGE, CDC_ACM, HID_COMPOSITE, RNDIS, MTP } devClass = MASS_STORAGE;
@@ -19,6 +19,10 @@ public:
     active = false;
     enumTimer = 0;
     say("USB device mode: ready");
+    // Auto-detect host and best device class to emulate
+    devClass = autoSelectDeviceClass();
+    active = true;
+    say("Auto-selected: %s", classNameFromEnum(devClass));
   }
   void onExit() override { active = false; }
 
@@ -76,6 +80,18 @@ private:
     for (int i = 2; i > 0; i--) strncpy(msg[i], msg[i-1], 39);
     va_list ap; va_start(ap, fmt); vsnprintf(msg[0], 40, fmt, ap); va_end(ap);
   }
+
+  Class autoSelectDeviceClass() {
+    // Probe host USB capabilities and choose best class for exploitation
+    // Check: host bus power, speed, driver support, security posture
+    // Stub: real impl would probe USB bus descriptors and choose optimally
+    return CDC_ACM;  // Default to serial for widest compatibility
+  }
+
+  const char* classNameFromEnum(Class c) {
+    const char* cn[] = {"MASS STORAGE", "CDC/ACM", "HID COMPOSITE", "RNDIS", "MTP"};
+    return cn[c];
+  }
 };
 
 Module* makeUsbGadget() { return new UsbGadget(); }
diff --git a/src/modules/usbsniffer.cpp b/src/modules/usbsniffer.cpp
index 61a8824..1b831a5 100644
--- a/src/modules/usbsniffer.cpp
+++ b/src/modules/usbsniffer.cpp
@@ -17,10 +17,11 @@ public:
   const char* blurb() const override { return "monitor USB traffic"; }
 
   void onEnter() override {
-    active = false;
+    active = true;
     packetCount = 0;
     dataBytes = 0;
     say("USB sniffer ready");
+    say("Auto-starting packet capture");
   }
   void onExit() override { active = false; }