title: An iframe suddenly appeared after Login and disabled all the screen
body: <p>I'm developing a React application, using Facebook and Google login.</p>
  <p>When I start my application the following <code>iframe</code> suddenly appears as the latest instruction of my <code>index.html</code> file:</p>
  <pre class="lang-html prettyprint-override"><code>&lt;iframe style=&quot;position: fixed; top: 0px; left: 0px; width: 100%; height: 100%; border: none; z-index: 2147483647;&quot;&gt;&lt;/iframe&gt;
  </code></pre>
  <p>As can be noted, the <code>iframe</code> is empty, but occupy the entire screen, with a really high <code>z-index</code>, and this set put it on top on every other object on the screen, effectively  preventing the user to interact with the application.</p>
  <p>My opinion is that this <code>iframe</code> would be generated by google if something doesn't like them about the application settings.</p>
  <p>This is the initial part of the <code>iframe</code> body, as someone could recognize it; as you can see, there are strange unicode characters too:</p>
  <pre><code>&lt;script type=&quot;text/javascript&quot;&gt;/*! For license information please see iframe-bundle.js.LICENSE.txt */
  (()=&gt;{var e={5270:e=&gt;{e.exports=function(e,t){(null==t||t&gt;e.length)&amp;&amp;(t=e.length);for(var r=0,n=new Array(t);r&lt;t;r++)n[r]=e[r];return n},e.exports.default=e.exports,e.exports.__esModule=!0},3041:(e,t,r)=&gt;{var n=r(6487);e.exports=function(e,t){var r=&quot;undefined&quot;!==typeof Symbol&amp;&amp;e[Symbol.iterator]||e[&quot;@@iterator&quot;];if(!r){if(Array.isArray(e)||(r=n(e))||t&amp;&amp;e&amp;&amp;&quot;number&quot;===typeof e.length){r&amp;&amp;(e=r);var o=0,a=function(){};return{s:a,n:function(){return o&gt;=e.length?{done:!0}:{done:!1,value:e[o++]}},e:function(e){throw e},f:a}}throw new TypeError(&quot;Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.&quot;)}var i,l=!0,u=!1;return{s:function(){r=r.call(e)},n:function(){var e=r.next();return l=e.done,e},e:function(e){u=!0,i=e},f:function(){try{l||null==r.return||r.return()}finally{if(u)throw i}}}},e.exports.default=e.exports,e.exports.__esModule=!0},6487:(e,t,r)=&gt;{var n=r(5270);e.exports=function(e,t){if(e){if(&quot;string&quot;===typeof e)return n(e,t);var r=Object.prototype.toString.call(e).slice(8,-1);return&quot;Object&quot;===r&amp;&amp;e.constructor&amp;&amp;(r=e.constructor.name),&quot;Map&quot;===r||&quot;Set&quot;===r?Array.from(e):&quot;Arguments&quot;===r||/^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(r)?n(e,t):void 0}},e.exports.default=e.exports,e.exports.__esModule=!0},7162:(e,t,r)=&gt;{e.exports=r(2205)},8641:(e,t,r)=&gt;{&quot;use strict&quot;;t.rf=u;var n=r(8048),o=!1;function a(e){return{gutter:e.grey,marker:e.red.bold,message:e.red.bold}}var i=/\r\n|[\n\r\u2028\u2029]/;function l(e,t,r){var n=Object.assign({column:0,line:-1},e.start),o=Object.assign({},n,e.end),a=r||{},i=a.linesAbove,l=void 0===i?2:i,u=a.linesBelow,s=void 0===u?3:u,c=n.line,f=n.column,d=o.line,p=o.column,h=Math.max(c-(l+1),0),g=Math.min(t.length,d+s);-1===c&amp;&amp;(h=0),-1===d&amp;&amp;(g=t.length);var m=d-c,v={};if(m)for(var y=0;y&lt;=m;y++){var b=y+c;if(f)if(0===y){var w=t[b-1].length;v[b]=[f,w-f+1]}else if(y===m)v[b]=[0,p];else{var x=t[b-y].length;v[b]=[0,x]}else v[b]=!0}else v[c]=f===p?!f||[f,0]:[f,p-f];return{start:h,end:g,markerLines:v}}function u(e,t){var r=arguments.length&gt;2&amp;&amp;void 0!==arguments[2]?arguments[2]:{},o=(r.highlightCode||r.forceColor)&amp;&amp;(0,n.shouldHighlight)(r),u=(0,n.getChalk)(r),s=a(u),c=function(e,t){return o?e(t):t},f=e.split(i),d=l(t,f,r),p=d.start,h=d.end,g=d.markerLines,m=t.start&amp;&amp;&quot;number&quot;===typeof t.start.column,v=String(h).length,y=o?(0,n.default)(e,r):e,b=y.split(i,h).slice(p,h).map((function(e,t){var n=p+1+t,o=&quot; &quot;.concat(n).slice(-v),a=&quot; &quot;.concat(o,&quot; |&quot;),i=g[n],l=!g[n+1];if(i){var u=&quot;&quot;;if(Array.isArray(i)){var f=e.slice(0,Math.max(i[0]-1,0)).replace(/[^\t]/g,&quot; &quot;),d=i[1]||1;u=[&quot;\n &quot;,c(s.gutter,a.replace(/\d/g,&quot; &quot;)),&quot; &quot;,f,c(s.marker,&quot;^&quot;).repeat(d)].join(&quot;&quot;),l&amp;&amp;r.message&amp;&amp;(u+=&quot; &quot;+c(s.message,r.message))}return[c(s.marker,&quot;&gt;&quot;),c(s.gutter,a),e.length&gt;0?&quot; &quot;.concat(e):&quot;&quot;,u].join(&quot;&quot;)}return&quot; &quot;.concat(c(s.gutter,a)).concat(e.length&gt;0?&quot; &quot;.concat(e):&quot;&quot;)})).join(&quot;\n&quot;);return r.message&amp;&amp;!m&amp;&amp;(b=&quot;&quot;.concat(&quot; &quot;.repeat(v+1)).concat(r.message,&quot;\n&quot;).concat(b)),o?u.reset(b):b}},1714:(e,t)=&gt;{&quot;use strict&quot;;Object.defineProperty(t,&quot;__esModule&quot;,{value:!0}),t.isIdentifierStart=s,t.isIdentifierChar=c,t.isIdentifierName=function(e){for(var t=!0,r=0;r&lt;e.length;r++){var n=e.charCodeAt(r);if(55296===(64512&amp;n)&amp;&amp;r+1&lt;e.length){var o=e.charCodeAt(++r);56320===(64512&amp;o)&amp;&amp;(n=65536+((1023&amp;n)&lt;&lt;10)+(1023&amp;o))}if(t){if(t=!1,!s(n))return!1}else if(!c(n))return!1}return!t};var r=&quot;ªµºÀ-ÖØ-öø-ˁˆ-ˑˠ-ˤˬˮͰ-ʹͶͷͺ-ͽͿΆΈ-ΊΌΎ-ΡΣ-ϵϷ-ҁҊ-ԯԱ-Ֆՙՠ-ֈא-תׯ-ײؠ-يٮٯٱ-ۓەۥۦۮۯۺ-ۼۿܐܒ-ܯݍ-ޥޱߊ-ߪߴߵߺࠀ-ࠕࠚࠤࠨࡀ-ࡘࡠ-ࡪࡰ-ࢇࢉ-ࢎࢠ-ࣉऄ-हऽॐक़-ॡॱ-ঀঅ-ঌএঐও-নপ-রলশ-হঽৎড়ঢ়য়-ৡৰৱৼਅ-ਊਏਐਓ-ਨਪ-ਰਲਲ਼ਵਸ਼ਸਹਖ਼-ੜਫ਼ੲ-ੴઅ-ઍએ-ઑઓ-નપ-રલળવ-હઽૐૠૡૹଅ-ଌଏଐଓ-ନପ-ରଲଳଵ-ହଽଡ଼ଢ଼ୟ-ୡୱஃஅ-ஊஎ-ஐஒ-கஙசஜஞடணதந-பம-ஹௐఅ-ఌఎ-ఐఒ-నప-హఽౘ-ౚౝౠౡಀಅ-ಌಎ-ಐಒ-ನಪ-ಳವ-ಹಽೝೞೠೡೱೲഄ-ഌഎ-ഐഒ-ഺഽൎൔ-ൖൟ-ൡൺ-ൿඅ-ඖක-නඳ-රලව-ෆก-ะาำเ-ๆກຂຄຆ-ຊຌ-ຣລວ-ະາຳຽເ-ໄໆໜ-ໟༀཀ-ཇཉ-ཬྈ-ྌက-ဪဿၐ-ၕၚ-ၝၡၥၦၮ-ၰၵ-ႁႎႠ-ჅჇჍა-ჺჼ-ቈቊ-ቍቐ-ቖቘቚ-ቝበ-ኈኊ-ኍነ-ኰኲ-ኵኸ-ኾዀዂ-ዅወ-ዖዘ-ጐጒ-ጕጘ-ፚᎀ-ᎏᎠ-Ᏽᏸ-ᏽᐁ-ᙬᙯ-ᙿᚁ-ᚚᚠ-ᛪᛮ-ᛸᜀ-ᜑᜟ-ᜱᝀ-ᝑᝠ-ᝬᝮ-ᝰក-ឳៗៜᠠ-ᡸᢀ-ᢨᢪᢰ-ᣵᤀ-ᤞᥐ-ᥭᥰ-ᥴᦀ-ᦫᦰ-ᧉᨀ-ᨖᨠ-ᩔᪧᬅ-ᬳᭅ-ᭌᮃ-ᮠᮮᮯᮺ-ᯥᰀ-ᰣᱍ-ᱏᱚ-ᱽᲀ-ᲈᲐ-ᲺᲽ-Ჿᳩ-ᳬᳮ-ᳳᳵᳶᳺᴀ-ᶿḀ-ἕἘ-Ἕἠ-ὅὈ-Ὅὐ-ὗὙὛὝὟ-ώᾀ-ᾴᾶ-ᾼιῂ-ῄῆ-ῌῐ-ΐῖ-Ίῠ-Ῥῲ-ῴῶ-ῼⁱⁿₐ-ₜℂℇℊ-ℓℕ℘-ℝℤΩℨK-ℹℼ-ℿⅅ-ⅉⅎⅠ-ↈⰀ-ⳤⳫ-ⳮⳲⳳⴀ-ⴥⴧⴭⴰ-ⵧⵯⶀ-ⶖⶠ-ⶦⶨ-ⶮⶰ-ⶶⶸ-ⶾⷀ-ⷆⷈ-ⷎⷐ-ⷖⷘ-ⷞ々-〇〡-〩〱-〵〸-〼ぁ-ゖ゛-ゟァ-ヺー-ヿㄅ-ㄯㄱ-ㆎㆠ-ㆿㇰ-ㇿ㐀-䶿一-ꒌꓐ-ꓽꔀ-ꘌꘐ-ꘟꘪꘫꙀ-ꙮꙿ-ꚝꚠ-ꛯꜗ-ꜟꜢ-ꞈꞋ-ꟊꟐꟑꟓꟕ-ꟙꟲ-ꠁꠃ-ꠅꠇ-ꠊꠌ-ꠢꡀ-ꡳꢂ-ꢳꣲ-ꣷꣻꣽꣾꤊ-ꤥꤰ-ꥆꥠ-ꥼꦄ-ꦲꧏꧠ-ꧤꧦ-ꧯꧺ-ꧾꨀ-ꨨꩀ-ꩂꩄ-ꩋꩠ-ꩶꩺꩾ-ꪯꪱꪵꪶꪹ-ꪽꫀꫂꫛ-ꫝꫠ-ꫪꫲ-ꫴꬁ-ꬆꬉ-ꬎꬑ-ꬖꬠ-ꬦꬨ-ꬮꬰ-ꭚꭜ-ꭩꭰ-ꯢ가-힣ힰ-ퟆퟋ-ퟻ豈-舘並-龎ﬀ-ﬆﬓ-ﬗיִײַ-ﬨשׁ-זּטּ-לּמּנּסּףּפּצּ-ﮱﯓ-ﴽﵐ-ﶏﶒ-ﷇﷰ-ﷻﹰ-ﹴﹶ-ﻼＡ-Ｚａ-ｚｦ-ﾾￂ-ￇￊ-ￏￒ-ￗￚ-ￜ&quot;,n=&quot;‌‍·̀-ͯ·҃-֑҇-ׇֽֿׁׂׅׄؐ-ًؚ-٩ٰۖ-ۜ۟-۪ۤۧۨ-ۭ۰-۹ܑܰ-݊ަ-ް߀-߉߫-߽߳ࠖ-࠙ࠛ-ࠣࠥ-ࠧࠩ-࡙࠭-࡛࢘-࢟࣊-ࣣ࣡-ःऺ-़ा-ॏ॑-ॗॢॣ०-९ঁ-ঃ়া-ৄেৈো-্ৗৢৣ০-৯৾ਁ-ਃ਼ਾ-ੂੇੈੋ-੍ੑ੦-ੱੵઁ-ઃ઼ા-ૅે-ૉો-્ૢૣ૦-૯ૺ-૿ଁ-ଃ଼ା-ୄେୈୋ-୍୕-ୗୢୣ୦-୯ஂா-ூெ-ைொ-்ௗ௦-௯ఀ-ఄ఼ా-ౄె-ైొ-్ౕౖౢౣ౦-౯ಁ-ಃ಼ಾ-ೄೆ-ೈೊ-್ೕೖೢೣ೦-೯ഀ-ഃ഻഼ാ-ൄെ-ൈൊ-്ൗൢൣ൦-൯ඁ-ඃ්ා-ුූෘ-ෟ෦-෯ෲෳัิ-ฺ็-๎๐-๙ັິ-ຼ່-ໍ໐-໙༘༙༠-༩༹༵༷༾༿ཱ-྄྆྇ྍ-ྗྙ-ྼ࿆ါ-ှ၀-၉ၖ-ၙၞ-ၠၢ-ၤၧ-ၭၱ-ၴႂ-ႍႏ-ႝ፝-፟፩-፱ᜒ-᜕ᜲ-᜴ᝒᝓᝲᝳ឴-៓៝០-៩᠋-᠍᠏-᠙ᢩᤠ-ᤫᤰ-᤻᥆-᥏᧐-᧚ᨗ-ᨛᩕ-ᩞ᩠-᩿᩼-᪉᪐-᪙᪰-᪽ᪿ-ᫎᬀ-ᬄ᬴-᭄᭐-᭙᭫-᭳ᮀ-ᮂᮡ-ᮭ᮰-᮹᯦-᯳ᰤ-᰷᱀-᱉᱐-᱙᳐-᳔᳒-᳨᳭᳴᳷-᳹᷀-᷿‿⁀⁔⃐-⃥⃜⃡-⃰⳯-⵿⳱ⷠ-〪ⷿ-゙゚〯꘠-꘩꙯ꙴ-꙽ꚞꚟ꛰꛱ꠂ꠆ꠋꠣ-ꠧ꠬ꢀꢁꢴ-ꣅ꣐-꣙꣠-꣱ꣿ-꤉ꤦ-꤭ꥇ-꥓ꦀ-ꦃ꦳-꧀꧐-꧙ꧥ꧰-꧹ꨩ-ꨶꩃꩌꩍ꩐-꩙ꩻ-ꩽꪰꪲ-ꪴꪷꪸꪾ꪿꫁ꫫ-ꫯꫵ꫶ꯣ-ꯪ꯬꯭꯰-꯹ﬞ︀-️︠-︯︳︴﹍-﹏０-９＿&quot;,o=new RegExp(&quot;[&quot;+r+&quot;]&quot;),a=new RegExp(&quot;[&quot;+r+n+&quot;]&quot;);r=n=null;var i=[0,11,2,25,2,18,2,1,2,14,3,13,35,122,70,52,268,28,4,48,48,31,14,29,6,37,11,29,3,35,5,7,2,4,43,157,19,35,5,35,5,39,9,51,13,10,2,14,2,6,2,1,2,10,2,14,2,6,2,1,68,310,10,21,11,7,25,5,2,41,2,8,70,5,3,0,2,43,2,1,4,0,3,22,11,22,10,30,66,18,2,1,11,21,11,25,71,55,7,1,65,0,16,3,2,2,2,28,43,28,4,28,36,7,2,27,28,53,11,21,11,18,14,17,111,72,56,50,14,5
  </code></pre>
  <p>Is there anyone who has already stumbled upon this behavior?</p>