diff --git a/lib/util.js b/lib/util.js
index 6db68ffb..de1255d1 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -709,6 +709,7 @@ function sanitizeShellString(str, strict) {
       (strict && s[i] === '@') ||
       (strict && s[i] === ' ') ||
       (strict && s[i] == '{') ||
+      (strict && s[i] == ';') ||
       (strict && s[i] == ')'))) {
       result = result + s[i];
     }
diff --git a/lib/wifi.js b/lib/wifi.js
index 39ad08c3..eb3dcddb 100644
--- a/lib/wifi.js
+++ b/lib/wifi.js
@@ -401,7 +401,15 @@ function wifiNetworks(callback) {
               }
             });
             if (iface) {
-              const res = getWifiNetworkListIw(iface);
+              let ifaceSanitized = '';
+              const s = util.isPrototypePolluted() ? '---' : util.sanitizeShellString(iface);
+              for (let i = 0; i <= util.mathMin(s.length, 2000); i++) {
+                if (s[i] !== undefined) {
+                  ifaceSanitized = ifaceSanitized + s[i];
+                }
+              }
+
+              const res = getWifiNetworkListIw(ifaceSanitized);
               if (res === -1) {
                 // try again after 4 secs
                 setTimeout(function (iface) {
@@ -529,8 +537,16 @@ function wifiConnections(callback) {
         const ifaces = ifaceListLinux();
         const networkList = getWifiNetworkListNmi();
         ifaces.forEach(ifaceDetail => {
-          const nmiDetails = nmiDeviceLinux(ifaceDetail.iface);
-          const wpaDetails = wpaConnectionLinux(ifaceDetail.iface);
+          let ifaceSanitized = '';
+          const s = util.isPrototypePolluted() ? '---' : util.sanitizeShellString(ifaceDetail.iface);
+          for (let i = 0; i <= util.mathMin(s.length, 2000); i++) {
+            if (s[i] !== undefined) {
+              ifaceSanitized = ifaceSanitized + s[i];
+            }
+          }
+
+          const nmiDetails = nmiDeviceLinux(ifaceSanitized);
+          const wpaDetails = wpaConnectionLinux(ifaceSanitized);
           const ssid = nmiDetails.ssid || wpaDetails.ssid;
           const network = networkList.filter(nw => nw.ssid === ssid);
           const nmiConnection = nmiConnectionLinux(ssid);