Effective graph resistance
I’ve mentioned the Moore-Penrose pseudoinverse of a matrix a few times, most recently last week. This post will give an application of the pseudoinverse: computing effective graph resistance. Given a graph G, imagine replacing each edge with a one Ohm resistor. The effective resistance between two nodes in G is the electrical
Read moreIn a crowded VC landscape, Elizabeth Weil’s Scribble Ventures shows that networks still matter
In an era where hundreds of new venture funds have emerged, only to face a narrowing market as exits prove slippery, Elizabeth Weil’s Scribble Ventures stands out as a case study in the importance of deep networks. Defying a contraction that is sidelining many newcomers, Weil just secured $80 million
Read more19-year-old student to plead guilty to huge school database hack
A 19-year-old college student will plead guilty to carrying out a massive hack against PowerSchool, a popular student information system used by schools around the country. On Tuesday, the Department of Justice said Matthew Lane of Massachusetts agreed to plead guilty to four counts, including cyber extortion, unauthorized access to
Read moreUS student agrees to plead guilty to hack affecting tens of millions of students
Prosecutors say the hacker stole information on 60 million students, an incident that matches the data breach at PowerSchool.
Read moreApollo for Reddit dev Christian Selig to join Digg as an advisor
Christian Selig, the iOS developer who ran the beloved third-party Reddit client Apollo, is joining the new iteration of Digg as an advisor. Earlier this year, Digg’s original founder Kevin Rose and Reddit co-founder Alexis Ohanian acquired what was left of Digg in an attempt to revitalize what was formerly
Read moreVodaBucks Rewards Programme Scoops Global Recognition in Gamification
Vodacom’s VodaBucks rewards program was recognized as the “Best Gamification Worldwide for Loyalty Enhancement” at the 2025 International Loyalty Awards in Dubai. The International Loyalty Awards, now in its 15th annual installment, celebrates excellence, innovation, and best practices in the global loyalty industry. The 2025 ceremony recognized brands that have
Read moreUber Freight bets big on AI tools to grow its business
Three years ago, as the pandemic caused chaos for companies big and small, Colgate-Palmolive’s chief supply chain officer Luciano Sieber orchestrated a “logistics blitz.” The result gave Sieber a better understanding of how Colgate-Palmolive moves its products around the world. But it stuck Sieber with another problem: too much data.
Read moreHow to Spoof Pokemon GO Location on iPhone/iPad with Bluetooth
You don’t need to jailbreak your phone or fly to Japan to catch a shiny Snorlax. You just need Bluetooth. Most guides talk about spoofing like it’s rocket science—root your Android, downgrade your iOS, cross fingers. But in 2025, that entire approach is dead. Niantic’s latest iOS 18 security updates
Read moreAxiz Expands Communication Technology Portfolio with Jabra Partnership
Technology reseller Axiz and international provider of professional audio and video solutions Jabra have launched a strategic alliance to expand Axiz’s portfolio with Jabra’s state-of-the-art communication technology, meeting the needs of professionals and businesses who require top-notch audio and video experiences. Terence Barter, a senior executive at Axiz, stated that
Read moreSimon Black Appointed Board Chair at Onafriq
Onafriq, Africa’s digital payments network, announced the appointment of Simon Black as an independent non-executive director on the board of directors of its holding company, Onafriq UK Holdings Limited, effective immediately. He brings over three decades of experience building and scaling payments and technology platforms to support Onafriq’s next growth
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