diff --git a/snow.js b/snow.js
index 32ea221..12cd0e7 100644
--- a/snow.js
+++ b/snow.js
@@ -375,7 +375,8 @@ module.exports = snow;
 
 const {
   error,
-  ERR_NON_TOP_DOCUMENT_WRITE_BLOCKED
+  ERR_NON_TOP_DOCUMENT_WRITE_BLOCKED,
+  ERR_HTML_FRAMES_SRCDOC_BLOCKED
 } = __webpack_require__(312);
 const {
   protectShadows
@@ -430,6 +431,11 @@ function getHook(native, isRange, isWrite) {
     return ret;
   };
 }
+function getThrowingHook(errorCode) {
+  return function () {
+    throw error(errorCode, this);
+  };
+}
 function hookDOMInserters(win) {
   for (let i = 0; i < protos.length; i++) {
     const proto = protos[i];
@@ -441,7 +447,11 @@ function hookDOMInserters(win) {
       const prop = desc.set ? 'set' : 'value';
       const isRange = proto === 'Range',
         isWrite = func === 'write' || func === 'writeln';
-      desc[prop] = getHook(desc[prop], isRange, isWrite);
+      if (func === 'srcdoc' && proto === 'HTMLIFrameElement') {
+        desc[prop] = getThrowingHook(ERR_HTML_FRAMES_SRCDOC_BLOCKED);
+      } else {
+        desc[prop] = getHook(desc[prop], isRange, isWrite);
+      }
       desc.configurable = true;
       if (prop === 'value') {
         desc.writable = true;
diff --git a/snow.prod.js b/snow.prod.js
index 395aaaf..9e996fd 100644
--- a/snow.prod.js
+++ b/snow.prod.js
@@ -1 +1 @@
-(function(){"use strict";if (typeof SNOW === "function") return;(()=>{var t={586:(t,e,n)=>{const r=n(228),{getFramesArray:o,getFrameTag:i}=n(648),{getOnload:c,setOnload:s,removeAttribute:u,addEventListener:a}=n(14);function p(t){if(!i(t))return;a(t,"load",(function(){r(t)}));const e=c(t);e&&(s(t,null),u(t,"onload"),s(t,e))}t.exports=function(t){for(let e=0;e<t.length;e++){const n=t[e],r=o(n,!0);for(let t=0;t<r.length;t++)p(r[t])}}},750:(t,e,n)=>{const{Object:r}=n(14);t.exports=function(t){t&&r.getOwnPropertyDescriptor(t,"")}},407:t=>{const e=Object.getOwnPropertyDescriptor(window,"length").get,n=e.bind(window),r=Object.getOwnPropertyDescriptor(Document.prototype,"createElement").value.bind(document),o=Object.getOwnPropertyDescriptor(Node.prototype,"appendChild").value.bind(document.documentElement),i=Object.getOwnPropertyDescriptor(Node.prototype,"removeChild").value.bind(document.documentElement);t.exports={getLength:e,runInNewRealm:function(t){const e=n(),c=r("IFRAME");o(c);const 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n(t,"DocumentPictureInPictureEvent"),n(t,"DocumentPictureInPicture"),async function(){const t=o(arguments),n=await i.prototype.apply.call(e,this,t);return n?c(n):null}}(t,t.documentPictureInPicture.requestWindow,s))}},373:(t,e,n)=>{const r=n(228),{getFramesArray:o,shadows:i}=n(648),{Object:c,Function:s}=n(14);function u(t){for(let e=0;e<i.length;e++){const n=i[e];if(t&&!n.isConnected)continue;const c=o(n,!1);r(c)}}t.exports={hookShadowDOM:function(t){const e=c.getOwnPropertyDescriptor(t.Element.prototype,"attachShadow");e.configurable=e.writable=!0;const n=e.value;var r;e.value=(r=n,function(t){const e=s.prototype.call.call(r,this,t);return i.push(e),u(!0),e}),c.defineProperty(t.Element.prototype,"attachShadow",e)},protectShadows:u}},294:(t,e,n)=>{const{trustedHTMLs:r}=n(648),{Object:o,Function:i}=n(14);t.exports=function(t){if(void 0===t.TrustedTypePolicy)return;const e=o.getOwnPropertyDescriptor(t.TrustedTypePolicy.prototype,"createHTML");e.configurable=e.writable=!0;const n=e.value;e.value=function(t,e){return r.push(t.trustedTypes.emptyHTML),function(t,n){const o=i.prototype.call.call(e,this,t,n);return r.push(o),o}}(t,n),o.defineProperty(t.TrustedTypePolicy.prototype,"createHTML",e)}},716:(t,e,n)=>{const{Object:r,Array:o,getBlobFileType:i}=n(14),{error:c,ERR_BLOB_TYPE_BLOCKED:s}=n(312),u="KIND",a="TYPE",p="Blob",l="File",f="MediaSource",g=new o,m=new o("","text/javascript","text/css","application/javascript","application/css","image/jpeg","image/jpg","image/png","audio/ogg; codecs=opus","video/mp4","application/pdf","application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");function y(t,e){return function(n,o){const c=new t(n,o);return r.defineProperty(c,u,{value:e}),e!==p&&e!==l||r.defineProperty(c,a,{value:i(c)}),g.push(c),c}}t.exports=function(t){(function(t){const e=t.URL.createObjectURL;r.defineProperty(t.URL,"createObjectURL",{value:function(t){return function(t){return g.includes(t)}(t)&&function(t){const e=t[u];if(e===p||e===l){const n=t[a];if(!m.includes(n))throw c(s,t,e,n)}}(t),e(t)}})})(t),function(t){const e=t[p],n=y(e,p);function o(t,e){return n(t,e)}r.setPrototypeOf(e.prototype,o.prototype),t[p]=o,r.defineProperty(e.prototype,"constructor",{value:o})}(t),function(t){const e=t[l],n=y(e,l);function o(t,e){return n(t,e)}r.setPrototypeOf(e.prototype,o.prototype),t[l]=o,r.defineProperty(e.prototype,"constructor",{value:o})}(t),function(t){const e=t[f],n=y(e,f);function o(t,e){return n(t,e)}r.setPrototypeOf(o,e),t[f]=o,r.defineProperty(e.prototype,"constructor",{value:o})}(t)}},648:(t,e,n)=>{const{tagName:r,nodeType:o,slice:i,Array:c,parse:s,stringify:u,Node:a,Document:p,DocumentFragment:l,Element:f,ShadowRoot:g,getContentWindow:m,getDefaultView:y,getOwnerDocument:d,stringToLowerCase:w,Object:E}=n(14),O=new c,h=new c;function v(t){return O.includes(t)}function b(t){if(v(t))return g;switch(o(t)){case a.prototype.DOCUMENT_NODE:return p;case a.prototype.DOCUMENT_FRAGMENT_NODE:return l;default:return f}}function D(t){const e=w(t);return"iframe"===e||"frame"===e||"object"===e||"embed"===e}function P(t){if(!t||"object"!=typeof t)return null;if(o(t)!==f.prototype.ELEMENT_NODE)return null;if(v(t))return null;const e=r(t);return D(e)?e:null}function L(t){return c.isArray(t)||(t=new c(t)),t}function R(t,e){let n=!1;for(let r=0;r<e.length;r++)t.includes(e[r])||(t.push(e[r]),n=!0);return n}t.exports={getDeclarativeShadows:function(t){return b(t).prototype.querySelectorAll.call(t,"template[shadowroot]")},makeWindowUtilSetter:function(t,e){const n=E.create(null);return n.value=e,function(e){E.getOwnPropertyDescriptor(e,t)||E.defineProperty(e,t,n)}},toArray:L,isTagFramable:D,getOwnerWindowOfNode:function(t){return y(d(t))},getContentWindowOfFrame:function(t){return m(t,P(t))},getFramesArray:function(t,e){const n=new c;if(null===t||"object"!=typeof t)return n;if(r=t,h.includes(r)||!function(t){if(v(t))return!0;const e=o(t);return e===f.prototype.ELEMENT_NODE||e===f.prototype.DOCUMENT_FRAGMENT_NODE||e===f.prototype.DOCUMENT_NODE}(t))return n;var r;const s=b(t).prototype.querySelectorAll.call(t,"iframe,frame,object,embed");return R(n,i(s)),e&&R(n,L(t)),n},getFrameTag:P,shadows:O,trustedHTMLs:h}},744:(t,e,n)=>{const{runInNewRealm:r}=n(407),{Map:o,toString:i,stringStartsWith:c,Blob:s}=n(14),u=new o,{createObjectURL:a,revokeObjectURL:p}=URL;t.exports=function(t){!function(t){t.URL.revokeObjectURL=function(t){const e=u.get(t);return e&&(p(e),u.delete(e)),p(t)}}(t),function(t){const e=t.Worker;t.Worker=function(t,n){const o="string"==typeof t?t:i(t);return c(o,"blob")?new e(function(t){if(!u.has(t)){const e=function(t){return r((function(e){let n;const r=new e.XMLHttpRequest;return r.open("GET",t,!1),r.onreadystatechange=function(){4===r.readyState&&200===r.status&&(n=r.responseText)},r.send(),n}))}(t),n="(function() { Object.defineProperty(URL, 'createObjectURL', { value: () => { throw new Error(`\nBLOCKED BY SNOW:\nCreating URL objects is not allowed under Snow protection within Web Workers.\nIf this prevents your application from running correctly, please visit/report at https://github.com/LavaMoat/snow/pull/89#issuecomment-1589359673.\nLearn more at https://github.com/LavaMoat/snow/pull/89`) }}) }())\n\n"+e;u.set(t,a(new s([n],{type:"text/javascript"})))}return u.get(t)}(o),n):new e(o,n)}}(t)}}},e={};function n(r){var o=e[r];if(void 0!==o)return o.exports;var i=e[r]={exports:{}};return t[r](i,i.exports,n),i.exports}n.n=t=>{var e=t&&t.__esModule?()=>t.default:()=>t;return n.d(e,{a:e}),e},n.d=(t,e)=>{for(var r in e)n.o(e,r)&&!n.o(t,r)&&Object.defineProperty(t,r,{enumerable:!0,get:e[r]})},n.o=(t,e)=>Object.prototype.hasOwnProperty.call(t,e),(()=>{"use strict";var t=n(352),e=n.n(t);!function(t){Object.defineProperty(t,"SNOW",{value:function(e,r){n(e,r||t)}});let n=e();t!==top&&(n=top.SNOW,t.SNOW((()=>{}),t))}(window)})()})();}())
\ No newline at end of file
diff --git a/src/inserters.js b/src/inserters.js
index b13f35f..19c5571 100644
--- a/src/inserters.js
+++ b/src/inserters.js
@@ -1,4 +1,4 @@
-const {error, ERR_NON_TOP_DOCUMENT_WRITE_BLOCKED} = require('./log');
+const {error, ERR_NON_TOP_DOCUMENT_WRITE_BLOCKED, ERR_HTML_FRAMES_SRCDOC_BLOCKED} = require('./log');
 const {protectShadows} = require('./shadow');
 const resetOnloadAttributes = require('./attributes');
 const {getFramesArray, shadows} = require('./utils');
@@ -45,6 +45,12 @@ function getHook(native, isRange, isWrite) {
     };
 }
 
+function getThrowingHook(errorCode) {
+    return function() {
+        throw error(errorCode, this);
+    }
+}
+
 function hookDOMInserters(win) {
     for (let i = 0; i < protos.length; i++) {
         const proto = protos[i];
@@ -55,9 +61,13 @@ function hookDOMInserters(win) {
             if (!desc) continue;
             const prop = desc.set ? 'set' : 'value';
             const
-                isRange = proto === 'Range',
-                isWrite = func === 'write' || func === 'writeln';
-            desc[prop] = getHook(desc[prop], isRange, isWrite);
+            isRange = proto === 'Range',
+            isWrite = func === 'write' || func === 'writeln';
+            if(func === 'srcdoc' && proto === 'HTMLIFrameElement') {
+                desc[prop] = getThrowingHook(ERR_HTML_FRAMES_SRCDOC_BLOCKED);
+            } else {
+                desc[prop] = getHook(desc[prop], isRange, isWrite);
+            }
             desc.configurable = true;
             if (prop === 'value') {
                 desc.writable = true;
diff --git a/test/html.js b/test/html.js
index e3626c5..d8b3fd5 100644
--- a/test/html.js
+++ b/test/html.js
@@ -4,6 +4,23 @@ const {generateErrorMessage, ERR_HTML_FRAMES_SRCDOC_BLOCKED, ERR_NON_TOP_DOCUMEN
 describe('test HTML injections', async function () {
     beforeEach(setup);
 
+    it('should fail to use atob of an created by srcdoc assignment', async function () {
+        if (global.CONFIG.SKIP_CSP_UNSAFE_INLINE_CHECKS) {
+            this.skip();
+        }
+        const result = await browser.executeAsync(function(done) {
+            top.done = done;
+            top.bypass = (wins) => done(wins.map(win => (win && win.atob ? win : top).atob('WA==')).join(','));
+            (function(){
+                let i = document.createElement('iframe');
+                i.srcdoc="<iframe>";
+                document.body.append(i)
+                setTimeout(bypass, 100, [ifr.contentWindow[0], ifr.contentWindow])
+            }());
+        });
+        expect(result).toBe('V,V');
+    });
+
     it('should fail to use atob of an iframe created by srcdoc (before)', async function () {
         if (global.CONFIG.SKIP_CSP_UNSAFE_INLINE_CHECKS) {
             this.skip();