BiaSciLab (@BiaSciLab, @GirlsWhoHack, @SecureOpenVote) is a 15-year-old hacker and maker. She was the youngest speaker at HOPE and has spoken at DEF CON in the Voting Village, Bio Hacking Village, and the r00tz Asylum kids con. She has spoken internationally on election security and has had her work highlighted at the congressional hearing on election security. This inspired her to build her own election system: Secure Open Vote. She is also the Founder and CEO of Girls Who Hack, an organization focused on teaching girls the skills of hacking so that they can change the future.

Cory Doctorow (@doctorow) (craphound.com) is a science fiction author, activist and journalist. He is the author of many books, most recently Radicalized and Walkaway (science fiction for adults), How to Destroy Surveillance Capitalism (nonfiction about monopoly and conspiracy), In Real Life (a graphic novel), and the picture book Poesy the Monster Slayer. His latest book is Attack Surface, a standalone adult sequel to Little Brother. His next nonfiction book is Chokepoint Capitalism with Rebecca Giblin, about monopoly and fairness in the creative arts labor market (Beacon Press, 2022). In 2020, he was inducted into the Canadian Science Fiction and Fantasy Hall of Fame.

Jameson Dungan is a maker/hacker cyborg from Norfolk, Virginia who has a wide range of hobbies and interests ranging from biohacking, urban exploring, leather making, fire and flow arts, radio and RF, to general creative hands-on making. He encourages others to explore and learn with hands-on educational classes at his local makerspace and to take part in the excitement of understanding and learning.

Dr. Nathaniel "nwf" Filardo (@qedragon) has been a senior researcher at Microsoft Research since 2020, where he has continued to lead the effort towards heap temporal memory safety enforcement atop CHERI, after his postdoc position in the security group of the University of Cambridge computer laboratory.

Tom Filecco (@Tfilecco) (aka Mr. Icom or Ticom) had his first article for 2600 published in 1987. He has appeared in the magazine every few years since then. His latest article, of the same name as his talk, was in the Autumn 2021 issue. He spoke about pagers at the first HOPE conference in 1994. From 1990 to 2021, he edited and published Cybertek Zine: The Cyberpunk Technical Journal. In real life, Tom wrenches on embedded Linux systems during the day, and at night works on his BA in geography.

Bill Graydon (@access_ctrl) is a principal researcher at GGR Security, where he hacks everything from locks and alarms to critical infrastructure. This has given him some very fine-tuned skills for breaking stuff. He's passionate about advancing the security field through research, teaching numerous courses, giving talks, and running the Physical Security (formerly Lock Bypass) Village at various cons. He's received various degrees in computer engineering, security, and forensics and comes from a broad background of work experience in physical and cyber security, anti-money laundering, and infectious disease detection.

Johannes Grenzfurthner manipulates people to positively respond to his lies and made-up realities, and he feeds off these emotions. He is an award-winning artist, filmmaker, author, and performer. He is the founder and artistic director of monochrom, an internationally acting art and theory group and film production company. Boing Boing referred to him as a "leitnerd," a wordplay that ironically hints at his role in nerd/hacker/art culture. His last films were the feature length documentaries Traceroute (2016) and Glossary of Broken Dreams (2018). He's working on two more feature films, including the sci-fi comedy Je Suis Auto and the documentary Hacking at Leaves. He is head of Arse Elektronika, a sex and tech festival in San Francisco, and organizer of Roboexotica, the Festival for Cocktail-Robotics in Vienna.

Phillip Hallam-Baker is a member of the CERN team that developed the World Wide Web, and is one of the significant contributors of the HTTP/1.0 specification. He has made major contributions to the design and deployment of the WebPKI and has had research appointments at DESY, CERN, MIT LCS, and MIT AI labs. He has served as principal scientist at VeriSign and Comodo.

Abi Hassen (@abihassen) is a lawyer, hardware hacker, and aspiring political philosopher. He is a partner at O'Neill and Hassen LLP, a law practice focused on indigent criminal defense, and co-founder of Black Movement Law Project, a legal support rapid response group that grew out of the uprisings in Ferguson, Baltimore, and elsewhere. Formerly, he was mass defense coordinator at the National Lawyers Guild. Abi has also worked as a political strategist, union organizer, and community organizer. He is interested in exploring the nature and potentials of movement organizing and the interface of political organizations and social movements with other complex systems such as the law, capitalism, and climate. Abi has a J.D. from NYU School of Law and an M.A. in political philosophy from Universitat Pompeu Fabra, Barcelona.

John Huntington (@jhuntington) is a professor of entertainment technology at New York City College of Technology, also known as Citytech, which is part of CUNY. At Citytech, he leads the audio, live video, and networking/control areas and, through his company Zircon Designs, he freelances as an author, entertainment and show control systems consultant, and sound engineer. He is also an award-winning photographer and storm chaser. He has presented talks at every HOPE conference since 2010.

Tom Kranz (@Whoopsie) has over 30 years' experience in cybersecurity, starting with breaking into Prestel with a BBC Micro in the U.K. in the early 1980s. He's now a CISO, published author, and consulting director. Tom has built cybersecurity teams for global companies, consultancies, and government departments, as well as advised executives and company leadership on how to change their hiring process to attract the best, relevant talent.

Alex Lynd (@alexlynd) (alexlynd.com) is an 18-year-old open-source developer and cybersecurity content creator. He appears on shows such as Hak5 and SecurityFWD, and runs a hardware business called HakCat, where he creates open-source products and educational content that (he hopes) will empower the next generation of makers and hackers. Alex is interested in signals intelligence, microcontrollers, and sustainable design, and enjoys finding ways to fuse computer science with his other hobbies.

Alex Marthews (@rebelcinder) is a U.S.-U.K. dual citizen and father of four living in Massachusetts. He has served as national chair of Restore The Fourth since 2014. His master's degree is in public policy, focusing on discrimination in online blocking and filtering systems. At The Eleventh HOPE, he spoke on "Surveillance Gives Me Chills," and at The Circle of HOPE spoke on a panel titled, "And This Is It? What Went Wrong with Surveillance Reform After Snowden." In his prior career, he was the executive director of nonprofits in the fields of historic preservation, poverty, and girls' education in East Africa.

Dr. Greg Newby (@gbnewby) is an international expert in the use of technology for discovery and understanding, in support of activities and programs for the common good. He has helped to shape digital literature and literacy, high performance computing, data management, information science education, and research software in Canada, the United States, and overseas. He is expert in service design and delivery, including software, systems, support, and infrastructure. His previous HOPE presentations, starting in 2000, have been on a range of topics including hacker ethics, eBooks, and law.

Karen Ng (@hwenab) is a risk analyst at GGR Security, and is one of GGR's entry team for physical penetration tests. She has a strong interest in physical security, delivering trainings on physical security vulnerabilities to a wide range of audiences. Karen comes from a background in engineering and has extensive experience in major event logistics. She is one of the village leads at the Physical Security (formerly Lock Bypass) Village, and works with the rest of the LBV team to teach how to recognize and fix security exploits to the community. Graphic design is her passion.

Isaac Overcast (@isaacovercast) is a computational biologist interested in unifying models of ecological and evolutionary processes to better understand how biodiversity is generated and maintained. From 2019 to 2021 he was a postdoctoral researcher in the Morlon group at Institut de Biologie de l'Ecole Normale Superieure in Paris, where he developed theory and models of island biodiversity genomics, in association with the EU funded iBioGen project. Isaac is currently a postdoc in the EcoEvoMatics lab at the University of Maine working on the Rules of Life Engine (the RoLE model), a continuation of his theoretical unification approach.

Jesselyn Radack (@JesselynRadack) is an award-winning human rights lawyer, author, former whistleblower, and national security and human rights director of the Whistleblower and Source Protection Program (WHISPeR) at ExposeFacts. She has defended numerous journalists, whistleblowers, and hacktivists, including Thomas Drake, Edward Snowden, and Daniel Hale, and is author of TRAITOR: The Whistleblower and the "American Taliban."

Lane Rettig (@lrettig) is a former Ethereum core developer and does core (layer one) blockchain R&D for Spacemesh (www.spacemesh.io). He has a background in privacy, security, and cryptography.

Carey Shenkman (@CareyShenkman) is a human rights lawyer, litigator, and co-author of a forthcoming volume on the panoramic history of the Espionage Act and CFAA: A Century of Repression: The Espionage Act and Freedom of the Press. He serves on the board of the Calyx Institute, and has worked on numerous topics at the intersection of civil rights and technology, including blockchains, artificial intelligence, data brokers, and encryption.

David Sidi is trying to think about privacy in new ways while researching, developing, and applying information technologies for privacy and security. In addition to measurement botnets, his other current projects focus on anonymity and planning for future security with Colombian news organizations.

Mixæl Swan Laufer (@MichaelSLaufer, @4ThievesVinegar) worked in mathematics and high energy physics until he decided to use his background in science to tackle problems of global health and human rights. He continues to work to make it possible for people to manufacture their own medical devices and medications at home by creating access to tools and information.

Holmes Wilson is an Internet freedom activist whose work mixes mass mobilization and software tools. He is a co-founder and board member of Fight for the Future: the activism organization that was instrumental in defeating the infamous U.S. site-blocking laws SOPA/PIPA, fighting for net neutrality rules in the U.S. and Europe, opposing law enforcement crypto backdoors, and more recently challenging the use of face recognition tech by U.S. law enforcement and products like Amazon Ring. He also previously co-founded Miro, a free software video player based on Bittorrent and RSS, and was a campaign manager at the Free Software Foundation. He's currently building Quiet, a local-first, peer-to-peer team chat app.