央视 315 晚会揭露了民众比较关心的一些问题,如“制造水军主板机”“吹得神乎其神的听花酒”“婚恋平台套路深”等,其中还穿插了一段对“AI 换脸”的科普。
01
聚焦315
警惕AI换脸、变声
315晚会进行到一半,主持人介绍了“信息安全实验室”,讲述了三起利用AI换脸、变声技术施骗的案件。
一是不法分子利用AI变声技术,谎称绑架了陈女士女儿,向陈女士索要80万元;
二是不法分子利用AI换脸技术,冒充陈先生好友,以购买机票遇到难题为由诈骗了4.9万元;
三是不法分子利用AI换脸技术,冒充张女士老板向其下达转账指示,好在及时察觉,最终保住了156万元。
视频通话 AI 换脸诈骗已发生多起,但由于技术限制,目前骗子换脸视频需要提前制作好,所以时间长不了。
视频的时候,可以要求对方摸摸脸、摸摸鼻子,一旦是AI的话,这两个动作很容易露馅。
如果对方只让你转钱,然后各种借口不到半分钟就挂了电话,很可能就是骗子,因为时间长了就露馅了。
02
利用AI换脸技术
不法分子牟取暴利
在视频中进行专业级别的AI换脸和变声,还要保持不卡顿、肉眼难识别,在技术上并非易事,对设备和技术的要求也很高。
以设备为例,需要中高配电脑、中高端显卡、电脑摄像头等,以下是黑产提供的配置展示。
AI换脸实际上是多项技术的集合,它从输入视频中提取人脸特征,再根据特征把输入视频重新生成出来。
使用者根据指引,要完成“登录、提取脸部数据、训练模型、换脸输出视频”等步骤,才能实现“AI换脸”的视频制作。
骗子在精准诈骗中,利用AI技术模仿真人声音和面部,和受害人沟通时新增了视频确认真人环节,而确认过程正是使用了AI换脸和拟声技术。
直接用AI换脸的方式骗取信任,这是很多人没能想到的。而骗子使用的换脸技术,可以实时换脸,或依靠图片换脸,人物脸部轮廓还能根据真人动作而实时变化。
诈骗场景一般是视频通话和短视频直播,视频通话换脸常用于仿冒亲友、仿冒领导诈骗,直播换脸常用于仿冒明星诈骗。
掌握AI技术的黑产还直接售卖软件和教程,主要用于以下场景。
1
裸聊敲诈
AI技术想与直播、实时通讯视频结合,还具备互动性,技术门槛更高。为了更快卖出换脸教程,黑产常会简化技术说明,比如下面裸聊敲诈的宣传。
2
明星换脸
黑产在网上宣传“承接AI定制”,再引流到其他平台交互,表示能承接明星换脸、AV换脸等业务,价格是每分钟200元,为营造真实感,还会发布AV换脸效果的预览图。
黑产宣传时有铺垫,比如:“AI换脸是通过先进算法,实现视频中人物脸部替换。替换之后能保持人脸表情同步,达到以假乱真的地步。老司机可轻松实现视频换脸。对小白而言,软件、模型、教程这些必不可少,中途遇到问题,也需要老司机带路”。
完成铺垫,还有引流,比如:“如果你想尝试制作换脸视频,可以联系XXXX。我们开发了容易使用和理解的中文界面的软件,同时提供配套的使用教程,还提供一对一的指导服务”。
3
一键脱衣
在AI换脸“一键脱衣”的宣传中,黑产声称可以定制人物脸部模型,只需要支付“万能模型、使用教程”的费用,即可达到“一键脱衣”效果。
与传统电信网络诈骗相比,AI换脸迷惑性更强,辨识难度更大,我们可通过以下方式识别和防范。
真正的AI换脸十分复杂,一些骗子并不具备这种技术,但一些迷惑性手法也会骗到人,比如下面王女士的遭遇。
03
与熟人视频通话后
王女士被骗上千元
王女士在家刷短视频,突然收到一条私信“有件事想让姐帮一下”,王女士看到对方是“熟人”,就简单聊了几句。
不久,对方打来视频通话,王女士接听后,对方表示今天需要买药,但自己微信限额,需要帮忙代付。
接着王女士添加了对方微信,双方再次视频通话,视频虽然卡顿,但画面非常“真实”,还有眨眼睛的动作。于是王女士放下戒备,点击对方发来的链接,连续两次为其支付药费。
当对方要求继续代付时,王女士起了疑心,马上打电话给这个熟人,才发现自己疑似遇到了“AI换脸”诈骗。
都说百闻不如一见,在网络发达的今天,就算视频通话见了,也未必真实。
【警方将嫌疑人抓捕归案】
王女士意识到被骗后,很快报警,同时通过腾讯卫士小程序进行举报,腾讯卫士分析多起相关案例,并将这些疑似AI技术换脸变声的欺诈线索依法移交警方。警方高度重视,及时研判并确认目标,很快抓获嫌疑人赵某。结合嫌疑人供述和涉案手机勘验,警方对案件进行了复盘,整个诈骗过程如下。
第一步:赵某在短视频平台寻找有大量自拍视频的“目标用户”,并将这些带人脸的视频下载到手机。再筛选“目标用户”视频作品下面的评论,对于评论次数多、看得出是熟人称呼的,将其列为诈骗对象;
第二步:赵某用自己的短视频账号发布下载的“自拍视频”,头像也仿冒目标用户,再私聊目标用户的熟人,前期简单寒暄,打视频通话获取信任,再以“近期生病需要买药,但微信支付被限制”为由,让受害人通过扫码的方式帮其支付药费;
第三步:赵某发的买药链接含有二维码,是提前在网上找人制作的聚合收款码,名称为某某药房,但实际绑定的收款账户为赵某自己名下的银行卡,受害人支付药费后,赵某便将钱转走。
让人哭笑不得的是,赵某打视频通话,并非真的使用了AI换脸技术,而是用两个手机在昏暗环境下作案,一个手机视频通话,一个手机播放“目标用户”的自拍视频,在短时间的视频通话中,让对方相信自己是“熟人”。
为了解释视频卡顿,赵某就说是信号不好,没有声音,很快挂断,继续用打字交流。
诈骗就这么发生了。
骗子全靠“手工”而非高门槛的AI换脸技术,这也说明目前低端犯罪领域还没有涉及到AI,但如果是专业黑产团伙,利用AI施骗还是有可能的。
这就不得不让人提高警惕。
当视频通话不清晰,对方又要在网上借钱或请求代支付,真的不如见一面,或主动打电话核实,就是不能先转账。
识别视频通话AI换脸
【1】要求对方用手指在其面部来回晃动,或挡住一部分脸,面部扭曲则可能是AI换脸。
【2】AI换脸一般是利用其他真人照片合成,若面部一直不眨眼,则可能是AI换脸。
如果真的遇到AI换脸可疑情形,请保存证据尽快报警,并可通过腾讯卫士小程序举报,帮助更多人避免上当。
04
腾讯卫士举报平台
全民共治的连接器
为保障用户合法权益,方便用户快速举报,腾讯客户服务部推出“腾讯卫士”举报平台。
腾讯卫士团队始终秉承“以最严谨态度对待每一位用户举报”的理念,致力于为用户提供有温度、有力度的服务体验,同时联合腾讯各安全团队将服务数据与安全技术深度结合,形成“用户举报受理、大数据防控、刑事案件打击、安全教育普及”为一体的网络安全防治体系。
举报渠道建设:腾讯卫士搭建了小程序、公众号、官网等综合性安全服务平台,并搭建跨平台、全场景举报服务体系,使之成为有公信力的全民共治连接器。
举报线索办理:平台深度分析举报线索,对有聚集性的案情线索进行整理并依法移交警方,对违法犯罪主体进行线下抓捕。形成用户举报、平台审核、违规账号处置、聚类分析、联动打击的链条化治理模式。
举报专项运营:平台响应国家“清朗”系列行动,灵活开展专项治理,精准打击网络黑灰产。通过搭建专项举报入口、数字化模式、线上线下结合等方式,进行综合治理、源头治理。
防范教育宣传:腾讯卫士运营小程序、公众号、官网、视频号等多个宣传渠道,基于用户举报生产教育,线上以图文、漫画、视频、海报等形式持续教育发声,线下通过进校园、进社区深入群众,运用白皮书、安全报告、三折页等物料开展反诈教育宣传。
防范和打击是网络治理的一体两面,未来,腾讯卫士将坚持专项治理、系统治理、综合治理、依法治理、源头治理相结合,坚决遏制网络违法犯罪趋势,与社会各界合力维护人民合法权益不受侵犯。
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#ededed;--weui-BG-1: #f7f7f7;--weui-BG-2: #fff;--weui-BG-3: #f7f7f7;--weui-BG-4: #4c4c4c;--weui-BG-5: #fff;--weui-FG-0: rgba(0, 0, 0, .9);--weui-FG-HALF: rgba(0, 0, 0, .9);--weui-FG-1: rgba(0, 0, 0, .55);--weui-FG-2: rgba(0, 0, 0, .3);--weui-FG-3: rgba(0, 0, 0, .1);--weui-FG-4: rgba(0, 0, 0, .15);--weui-FG-5: rgba(0, 0, 0, .05);--weui-RED: #fa5151;--weui-ORANGERED: #ff6146;--weui-ORANGE: #fa9d3b;--weui-YELLOW: #ffc300;--weui-GREEN: #91d300;--weui-LIGHTGREEN: #95ec69;--weui-BRAND: #07c160;--weui-BLUE: #10aeff;--weui-INDIGO: #1485ee;--weui-PURPLE: #6467f0;--weui-WHITE: #fff;--weui-LINK: #576b95;--weui-TEXTGREEN: #06ae56;--weui-FG: #000;--weui-BG: #fff;--weui-TAG-TEXT-RED: rgba(250, 81, 81, .6);--weui-TAG-BACKGROUND-RED: rgba(250, 81, 81, .1);--weui-TAG-TEXT-ORANGE: #fa9d3b;--weui-TAG-BACKGROUND-ORANGE: rgba(250, 157, 59, .1);--weui-TAG-TEXT-GREEN: #06ae56;--weui-TAG-BACKGROUND-GREEN: rgba(6, 174, 86, .1);--weui-TAG-TEXT-BLUE: #10aeff;--weui-TAG-BACKGROUND-BLUE: rgba(16, 174, 255, .1);--weui-TAG-TEXT-BLACK: rgba(0, 0, 0, .5);--weui-TAG-BACKGROUND-BLACK: rgba(0, 0, 0, .05)}body,.wx-root{--weui-BG-0: #ededed;--weui-BG-1: #f7f7f7;--weui-BG-2: #fff;--weui-BG-3: #f7f7f7;--weui-BG-4: #4c4c4c;--weui-BG-5: #fff;--weui-FG-0: rgba(0, 0, 0, .9);--weui-FG-HALF: rgba(0, 0, 0, .9);--weui-FG-1: rgba(0, 0, 0, .55);--weui-FG-2: rgba(0, 0, 0, .3);--weui-FG-3: rgba(0, 0, 0, .1);--weui-FG-4: rgba(0, 0, 0, .15);--weui-FG-5: rgba(0, 0, 0, .05);--weui-RED: #fa5151;--weui-ORANGERED: #ff6146;--weui-ORANGE: #fa9d3b;--weui-YELLOW: #ffc300;--weui-GREEN: #91d300;--weui-LIGHTGREEN: #95ec69;--weui-BRAND: #07c160;--weui-BLUE: #10aeff;--weui-INDIGO: #1485ee;--weui-PURPLE: #6467f0;--weui-WHITE: #fff;--weui-LINK: #576b95;--weui-TEXTGREEN: #06ae56;--weui-FG: #000;--weui-BG: #fff;--weui-TAG-TEXT-RED: rgba(250, 81, 81, .6);--weui-TAG-BACKGROUND-RED: rgba(250, 81, 81, .1);--weui-TAG-TEXT-ORANGE: #fa9d3b;--weui-TAG-BACKGROUND-ORANGE: rgba(250, 157, 59, .1);--weui-TAG-TEXT-GREEN: #06ae56;--weui-TAG-BACKGROUND-GREEN: rgba(6, 174, 86, .1);--weui-TAG-TEXT-BLUE: #10aeff;--weui-TAG-BACKGROUND-BLUE: rgba(16, 174, 255, .1);--weui-TAG-TEXT-BLACK: rgba(0, 0, 0, .5);--weui-TAG-BACKGROUND-BLACK: rgba(0, 0, 0, .05)}.wx-root,body{--weui-BTN-ACTIVE-MASK: rgba(0, 0, 0, .1)}.wx-root,body{--weui-BTN-DEFAULT-ACTIVE-BG: #e6e6e6}.wx-root,body{--weui-DIALOG-LINE-COLOR: rgba(0, 0, 0, .1)}.wx-root,body{--weui-BG-COLOR-ACTIVE: #ececec}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--weui-BTN-ACTIVE-MASK: rgba(255, 255, 255, .1)}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--weui-BTN-DEFAULT-ACTIVE-BG: rgba(255, 255, 255, .126)}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--weui-DIALOG-LINE-COLOR: rgba(255, 255, 255, .1)}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--APPMSGCARD-BG: #1E1E1E}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--APPMSGCARD-LINE-BG: rgba(255, 255, 255, .07)}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--weui-BG-COLOR-ACTIVE: #373737}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--weui-BG-6: rgba(255, 255, 255, .1);--weui-ACTIVE-MASK: rgba(255, 255, 255, .1)}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--weui-REDORANGE: #ff6146;--weui-BG-0: #111;--weui-BG-1: #1e1e1e;--weui-BG-2: #191919;--weui-BG-3: #202020;--weui-BG-4: #404040;--weui-BG-5: #2c2c2c;--weui-FG-0: rgba(255, 255, 255, .8);--weui-FG-HALF: rgba(255, 255, 255, .6);--weui-FG-1: rgba(255, 255, 255, .5);--weui-FG-2: rgba(255, 255, 255, .3);--weui-FG-3: rgba(255, 255, 255, .1);--weui-FG-4: rgba(255, 255, 255, .15);--weui-FG-5: rgba(255, 255, 255, .1);--weui-RED: #fa5151;--weui-ORANGERED: #ff6146;--weui-ORANGE: #c87d2f;--weui-YELLOW: #cc9c00;--weui-GREEN: #74a800;--weui-LIGHTGREEN: #3eb575;--weui-BRAND: #07c160;--weui-BLUE: #10aeff;--weui-INDIGO: #1196ff;--weui-PURPLE: #8183ff;--weui-WHITE: rgba(255, 255, 255, .8);--weui-LINK: #7d90a9;--weui-TEXTGREEN: #259c5c;--weui-FG: #fff;--weui-BG: #000;--weui-TAG-TEXT-RED: rgba(250, 81, 81, .6);--weui-TAG-BACKGROUND-RED: rgba(250, 81, 81, .1);--weui-TAG-TEXT-ORANGE: rgba(250, 157, 59, .6);--weui-TAG-BACKGROUND-ORANGE: rgba(250, 157, 59, .1);--weui-TAG-TEXT-GREEN: rgba(6, 174, 86, .6);--weui-TAG-BACKGROUND-GREEN: rgba(6, 174, 86, .1);--weui-TAG-TEXT-BLUE: rgba(16, 174, 255, .6);--weui-TAG-BACKGROUND-BLUE: rgba(16, 174, 255, .1);--weui-TAG-TEXT-BLACK: rgba(255, 255, 255, .5);--weui-TAG-BACKGROUND-BLACK: rgba(255, 255, 255, .05)}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--discussInput-BG: rgba(255, 255, 255, .03)}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--nickName-FG: #959595}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--weui-BG-0: #111;--weui-BG-1: #1e1e1e;--weui-BG-2: #191919;--weui-BG-3: #202020;--weui-BG-4: #404040;--weui-BG-5: #2c2c2c;--weui-FG-0: rgba(255, 255, 255, .8);--weui-FG-HALF: rgba(255, 255, 255, .6);--weui-FG-1: rgba(255, 255, 255, .5);--weui-FG-2: rgba(255, 255, 255, .3);--weui-FG-3: rgba(255, 255, 255, .1);--weui-FG-4: rgba(255, 255, 255, .15);--weui-FG-5: rgba(255, 255, 255, .1);--weui-RED: #fa5151;--weui-ORANGERED: #ff6146;--weui-ORANGE: #c87d2f;--weui-YELLOW: #cc9c00;--weui-GREEN: #74a800;--weui-LIGHTGREEN: #3eb575;--weui-BRAND: #07c160;--weui-BLUE: #10aeff;--weui-INDIGO: #1196ff;--weui-PURPLE: #8183ff;--weui-WHITE: rgba(255, 255, 255, .8);--weui-LINK: #7d90a9;--weui-TEXTGREEN: #259c5c;--weui-FG: #fff;--weui-BG: #000;--weui-TAG-TEXT-RED: rgba(250, 81, 81, .6);--weui-TAG-BACKGROUND-RED: rgba(250, 81, 81, .1);--weui-TAG-TEXT-ORANGE: rgba(250, 157, 59, .6);--weui-TAG-BACKGROUND-ORANGE: rgba(250, 157, 59, .1);--weui-TAG-TEXT-GREEN: rgba(6, 174, 86, .6);--weui-TAG-BACKGROUND-GREEN: rgba(6, 174, 86, .1);--weui-TAG-TEXT-BLUE: rgba(16, 174, 255, .6);--weui-TAG-BACKGROUND-BLUE: rgba(16, 174, 255, .1);--weui-TAG-TEXT-BLACK: rgba(255, 255, 255, .5);--weui-TAG-BACKGROUND-BLACK: rgba(255, 255, 255, .05)}}@media(prefers-color-scheme:dark){.wx-root:not([data-weui-theme=light]),body:not([data-weui-theme=light]){--appmsgExtra-BG: #121212}}.rich_media_content p{clear:both;min-height:1em}td p{margin:0;padding:0}a{color:#576b95;text-decoration:none;-webkit-tap-highlight-color:#0000;-webkit-user-drag:none}a{color:var(--weui-LINK)}a,button{cursor:pointer}@media screen and (min-width:1024px){body:not(.pages_skin_pc) :root{--appmsgPageGap: 20px;--appmsgPageBottomGap: 40px}}:root{--articleFontsize: 17px}:root{--sab: env(safe-area-inset-bottom)}:root{--wxBorderAvatarRatio: 3}:root{--discussPageGap: 20px}:root{--immersive-safe-bottom: env(safe-area-inset-bottom)}:root{--appmsgPageGap: 20px;--appmsgPageBottomGap: 40px}
div.autoTypeSetting24psection > p,div.autoTypeSetting24psection > section{margin-bottom: 24px;}