Speakers' slides from the COSCUP 2026 track

On 8 and 9 August, anoni.net ran a two-day community track at COSCUP 2026. Its 16 sessions went from how the internet works, threat models and open-source privacy tools to campus Tor relays, browser tracking, data-privacy rights and anonymous payments. Since then speakers have shared their slides, and slides for 11 sessions plus one recording now sit under each session on the track page, for anyone who missed the day or wants to look something up again.

Each set of slides has a one-line summary below so you can pick what to open. Copyright stays with each speaker, so please ask the speaker before reposting or adapting their slides unless a license is noted. Most talks were in Mandarin, and so are most of the slides.

Go to the track page

Introduction to open-source anonymity networks, 8 August morning

Meet Anonymity Networks Community: open-source anonymity tools, community practice, and the three 2026 themes
anoni.net community · Slides (PDF, 14 pages)

How the community translates Tor, Tails and OONI and runs relays, where Taiwan falls short on anonymous whistleblowing and Tor relays, and how to take part without a technical background.

Threat models and metadata 101: know your adversary, and why anonymity tools must be open source to be trustworthy
anoni.net community · Slides (PDF, 20 pages)

An independent journalist and an employee passing on documents walk through three questions (what to protect, from whom, at what cost), followed by why metadata is often more dangerous than content.

Real-world open-source privacy tools: how civil-society groups, independent journalists, and individuals actually use them
anoni.net community · Slides (PDF, 16 pages)

Open-source tools such as Signal, CryptPad, OnionShare and mat2 for civil society, journalists and individuals, each marked with how hard it is to pick up and where it falls short.

Anonymous payments with ETHTaipei, 8 August afternoon

"I don't launder money — so why understand anonymous payments?" A from-scratch intro to private crypto flows
mashbean · Slides (web)

From anti-money-laundering rules to public crypto ledgers, comparing how Tornado Cash, Privacy Pools and Railgun trade privacy against keeping out dirty money. No crypto background needed.

Hands-on private payments workshop: from Tornado Cash to Privacy Pool
Liangcc · Slides (web)

Tornado Cash and Privacy Pools compared, with steps from installing a wallet to depositing and withdrawing, which you can practise on a testnet simulation.

Accepted talks, 9 August

The Workings of the Internet: how the net works and how censors block you (in English)
Raghu · Slides (PDF, 141 pages, 6.7 MB)

Postcards as the analogy for a connection, from DNS to HTTPS: what your ISP and the café Wi-Fi can each see and block. In English.

Building a home network with OpenWRT and other open-source software
Pellaeon · Slides (PDF, 23 pages)

A router under NT$3,000 running OpenWRT gives a home an isolated guest network, several public IP addresses and a site-to-site VPN, with buying advice.

Growing onions on campus? Running an academic Tor node at NTNU and lessons from the EFF Tor University Challenge
NZ · Slides (PDF, 19 pages) · Recording (Google Drive)

The technical setup and administrative route behind a student-run Tor relay at NTNU, and what is still unsolved, such as power cuts and handing over after graduation. There is also a recording of this talk.

Browser tracking, anti-tracking strategies, and user autonomy
Pellaeon · Slides (PDF, 32 pages)

Brave's randomisation and Tor Browser's uniformity compared as anti-tracking strategies, plus separating your browsing across several Firefox profiles.

After the health-insurance database case: exercising the right to stop secondary use, and other large databases
Kuan-Ju Chou · Slides (PDF, 18 pages)

Ten years after the lawsuit over Taiwan's health insurance database, people can apply to stop secondary use from August 2025; the second half surveys other large government databases such as school records, labour insurance and e-invoices.

Privacy guide 2026
Justyn · Slides (PDF, 40 pages, 19 MB)

Judge how much protection your situation needs, then choose messaging, payments and devices accordingly, ending with one 15-minute improvement for each level.

Sessions without public slides

These five speakers did not share slides; the session descriptions and speaker bios remain on the track page:

• Drugs that aren't drugs, laundering that isn't laundering: on anonymous eligibility verification (Denken Chen)
• Zero-knowledge proofs and Citizen Digital Certificate identity verification (Ya-wen Jeng)
• The Privacy-preserving Identity Pipeline in KYC (ryanycw)
• Starting from unlinkability: how stealth addresses solve on-chain financial privacy (Fluidkey case study) (Jennifer HSU)
• Open-standard real-identity methods on blockchain networks (Yusef Schultz)

Further reading

• COSCUP 2026 Anonymity Networks Community track, with the two-day program and speaker bios
• Tor relays on campus, the proposal template, setup SOP and FAQ mentioned in the NTNU talk
• Journalists and source protection, the journalist scenario from the threat model talk, with the full set of practices on the docs site
• Metadata, and why it matters