Have you seen Barack Obama call Donald Trump a “complete dipshit,” or Mark Zuckerberg brag about having “total control of billions of people’s stolen data”? Answer yes and you’ve seen a deepfake. The 21st century’s answer to photoshopping, deepfakes use a form of artificial intelligence (AI) called deep learning to create images of fake events, hence the name deepfake.
The AI firm Deeptrace found 15,000 deepfake videos online in September 2019, a near doubling over nine months. A staggering 96 percent were pornographic, and 99 percent of those mapped faces from female celebrities onto porn stars.
Is it just about videos? No. Deepfake technology can create convincing but entirely fictional photos from scratch.
Photo: AFP 照片：法新社
Audio can be deepfaked too. In March 2019, the chief of a UK subsidiary of a German energy firm paid nearly ￡200,000 into a Hungarian bank account after being phoned by a fraudster who mimicked the German CEO’s voice. Similar scams have reportedly used recorded WhatsApp voice messages.
How do you spot a deepfake? Poor-quality deepfakes are easier to spot. The lip synching might be bad, or the skin tone patchy. However, spotting a deepfake gets harder as the technology improves. In 2018, US researchers discovered that deepfake faces do not blink normally. No surprise there: the majority of images show people with their eyes open, so the algorithms never really learned about blinking. At first it seemed like a silver bullet for the detection problem, but no sooner had the research been published than deepfakes appeared with blinking. Such is the nature of the game: as soon as a weakness is revealed, it is fixed.
(The Guardian)
你看過歐巴馬稱川普為「徹頭徹尾的蠢貨」，或是祖克柏吹噓「完全掌控了數十億人被盜的資料」嗎？若你回答是，那麼你已見識過「deepfake」（深偽）。deepfake是二十一世紀對Photoshop影像處理的回應，使用一種稱為「深度學習」的人工智慧來製作影像以偽造事情，因此而得名。
人工智慧公司Deeptrace二○一九年九月在網路上發現了一萬五千個deepfake影片，在九個月內幾乎翻了一倍。其中高達百分之九十六的比例是色情內容，所顯示的臉孔，百分之九十九是女性，從名人到色情片明星都有。
deepfake只限於影片嗎？不是的。此技術可做出令人信服，卻是完全虛構的照片。
聲音也可以被深度偽造。二○一九年三月，一家德國能源公司的英國子公司負責人接到一通詐騙電話，騙子的聲音模仿德國的CEO，該負責人便將近二十萬英鎊匯入一個匈牙利的銀行帳戶。據報導，類似的詐騙手法也用於錄製WhatsApp語音訊息。
要如何辨識deepfake呢？品質差的deepfake較容易被識破──嘴唇可能不太同步，或者膚色不均勻。但隨著技術的進步，辨識deepfake變得越來越難。二○一八年，美國有研究人員發現deepfake的人臉無法正常地眨眼。這不令人意外：大多數影像所顯示的人臉，眼睛都是睜開的，因此演算法從未真正學習到眨眼。起先眨眼似乎是識破深偽的訣竅。但這項研究發表後不久，會眨眼的deepfake就出現了。這就是遊戲的本質：弱點一旦被發現，就會被修復。
（台北時報林俐凱編譯）
When you think of the Netherlands, images of tulips, windmills, and iconic wooden shoes — known as “Dutch clogs” — may come to mind. These traditional shoes are rich in cultural significance. For centuries, Dutch clogs have been admired for their sturdy design and impressive craftsmanship, making them a fascinating symbol of Dutch heritage. Dutch clogs date back to the Middle Ages. During that time, farmers and laborers needed durable shoes to cope with the region’s damp and unpredictable climate and topography. Crafted from solid wood, such as willow or poplar, clogs offered outstanding protection. Their firm structure kept
Bilingual Story is a fictionalized account. 雙語故事部分內容純屬虛構。 “One DA-BEI... WU LONG... NAI?” Yujing smiled as the foreigner struggled to order. He looked like an embarrassed puppy. She repeated the order in Chinese, then English: “Oolong milk tea, large size. Half sweet, no ice?” she said gently. He beamed — the kind of full-face, sunshine smile that Latinos are famous for. “Yes! That! You are... lo maximo… the best!” After he left, Lily nudged her. “Nice save. You’re getting the hang of it.” Yujing had taken this summer job at the bubble tea shop to build confidence and get work
A: The news says comic superstar Snoopy’s birthday is coming soon on Aug. 10. B: So he’s a Leo, and his birthday will fall on this Sunday. A: Cartoonist Charles Schulz created the comic strip Peanuts, featuring Snoopy, in 1950. And this year marks the character’s 75th anniversary. B: No wonder there are some big celebrations in Japan, Hong Kong and elsewhere. How about Taiwan? A: The “How Do You Do, Snoopy?” exhibition is taking place in Taipei. Let’s go to Shin Kong Mitsukoshi Department Store’s A11 branch to see the show. A: 新聞說，卡通巨星史努比的生日是8月10日耶。 B: 原來史努比是獅子座，本週日就是他的生日。 A: 漫畫家查爾斯舒茲1950年在《花生》漫畫創造了該角色，今年正好歡慶75週年！ B:
Although sending you an SMS (Short Message Service) verification code provides some security, many apps now use code-generating apps and two-factor authentication instead. But more recently, passkeys now use a biometric approach to logging in. Biometrics can offer an even more secure alternative. Following this trend, Google is reportedly planning to replace SMS verification codes with “QR code” scanning. SMS codes are currently used to verify user identity and prevent fraudsters from creating fake Gmail accounts to distribute spam. However, these codes present several challenges. They can be phished through suspicious links, and users may not always have access
RSS