Note for 33C3.
上一篇:33C3 (1)
33C3 Day 2 (2016.12.28 Wed)
How physicists analyze massive data: LHC + brain + ROOT = Higgs
Axel Naumann, CERN - [email protected]
影片:https://media.ccc.de/v/33c3-8083-how_physicists_analyze_massive_data_lhc_brain_root_higgs
CERN
- European Organization for Nuclear Research, est. 1954, near Geneva
- What is mass? What's in the universe? Probing smallest scale particles: Higgs particle, super symmetry, ...
- Fact sheet
- 12,000 physicists
- from 120 nations
- CERN itself has about 2500 employees
- LHC (Large Hadron Collider)
- All build by physicists in CERN
-
You cannnot just by the gears on Amazon
- Life (Work) at CERN
- More laptops than people
What we do in CERN
- Theory and Simulation
- Super super precise
- But LHC experiments also looking for unconfirmed / weird things
- Prediction versus Measurement
- When is a difference between "boring theory" and measurment.
- Weather vs Climate
- Measure temperatures
- Detect "abnormal" temperature variations
- Data and Uncertainties
- Our simulation has uncertainties from theory
- More Data Helps
- Correlating data helps
- Reduced measurement uncertainty helps
- more collisions = more data = higher changce to claim "we see something"
Computers
- CPU Efficiency (CMS)
- Average 750%
-
100% is for beginners XD
-
- Average 750%
Measure effect of bugs
- Why not HDFS / HDF5 / Protobuf / ...
-
Cling, C++ interpreter of CERN
-
What we used in CERN
- Davix
- CernVM-FS
- ROOT
Data analysis in CERN
- C++
- ROOT
- http://root.cern
- Serialization facilities
- Statistics tools
這場的講者用掌聲的熱烈程度讓觀眾選擇要聽哪兩個部份,
其實還挺誘答的,每次都是後者。
總之就是在向大家介紹 CERN 在做什麼,然後找人進去做軟體。
T-shirts (20 EUR), Hoodie (35 EUR), Zipper (45 EUR) 大概下午一點多開賣,
排隊的人超級多,果然世界各地的宅宅都會掉 Conference T-shirt 的坑。
Gone in 60 milliseconds
Richard Jones
影片:https://media.ccc.de/v/33c3-7865-gone_in_60_milliseconds
第一次看到英文的簡報用高橋流,搭配一些程式碼的截圖,感覺效果挺不錯的。
詳細的講解怎麼攻擊 AWS Lambda 的思路,挺精彩的,但沒有現場 Live demo 就是。
因為用高橋流講的很快,英打速度不夠快,加上我對 AWS 不夠熟,所以就不做筆記哩,看之後投影片會不會釋出吧。
講者在演講後會釋出 AWS Infection Toolkit on GitHub (Miserlou/mackenzie),
但根據這個 Issue 的回覆看來,
講者要等對這個 toolkit 寫完測試後才會 push 到 GitHub 上。
Recount 2016: An uninvited security audit of the U.S. presidential election
J. Alex Halderman, Matthew Bernhard, University of Michigan
- 2 styles, 52 models of voting machines
- styles
- Optical Scan
- Computer counts paper balots as they're placed in ballot box
- DRE (Direct Recording Electronic)
- Optical Scan
- styles
- Long, Complicated Ballots
- Reverse engineering the voting machines
- Used movable memory card, could be installed malware on the machines
- Are U.S. Voting Machines Secure?
- Hart InterCivic eSlate, AVC Advantage, Sequoia AVC Edge, ... lots of card spread malwares
- Vulnerabilities for malware to stealing the vote result.
- Election Hacking
- Alter election-night results
- Denial of service
- Political interfeerence
- Challenges
- Need to swap <1% of votes in two states
- Machines aren't no connect with internet
- But use centralized election management computers
- Centralized election management computer programs ballots are dd into memory card before the election
- Hakcing a U.S. election machines is much more easier than you thought.
- Will we ever be able to confirm outcome was correct?
- Jill stein, 2016 Green Party U.S. presidential election candidates willing to help to demand a recount. (Any candidates can demand a recount if they pay the cost.)
- How to pay for the recount? => Crowd funding
- Where to recount? => Wisconsin, Michigan, Pennsylvania
主要就是在講美國 2016 大選的問題,
探討投票機是不是有可能被動手腳,
以及講者參與要求重新計票的過程。
3 Years After Snowden: Is Germany fighting state surveillance?
影片:https://media.ccc.de/v/33c3-8117-3_years_after_snowden_is_germany_fighting_state_surveillance
主要就是講述自從 3 年前 Snowden 從香港逃出後到現在,
德國的爭取網路隱私權的一些狀況。
重點是這場 session 最後出現的神祕嘉賓,
Snowden 本人現場連線和大家說話,
全場為之瘋狂,
出現和結束連線的時候大家都起立鼓掌了好久。
The untold story of Edward Snowden's Escape from Hong Kong
影片:https://media.ccc.de/v/33c3-8416-the_untold_story_of_edward_snowden_s_escape_from_hong_kong
2013 年幫助史諾登逃出香港的人們
(被稱為 Snowden's Guardians,大多數是難民,因為覺得史諾登的處境跟他們很像所以幫忙他),
至今的處境仍然和三年前一樣悲慘,
仍然居住在一樣狹小的空間,
因為香港政府不讓難民在香港取得工作權,
其子女在香港也拿不到國籍,
成為 Stateless 的無國家遊民,
所以希望可以透過群眾募資幫忙這些人,
結果香港政府發現以後,
把群眾募資的網站關閉,
所以這場 talk 主要就是請大家把這兩個群眾募資的連結散佈出去,
讓更多人可以幫助他們。
然後用 Skype 現場連線當初幫忙庇護 Snowden 的 Guardians 之一:菲律賓籍的 Vanessa,
講述她遇到 Snowden 的過程,
一個白人男子來敲她的門想尋求住處,
但她的住處只有一張床,
她把床讓給 Snowden 睡,
自己則睡地板上。
隔天早上,Snowden 請她幫忙買一份英文報紙,
她才知道原來這個人是全球頭號通緝犯,
但她仍然因為 Snowden 的危險處境而幫忙他,
直到他逃離香港,期間還和家人一起慶祝 Snowden 30 歲生日,並一起吃生日蛋糕。
現場有會眾問她「如果再讓妳選一次,妳會幫忙 Snowden 嗎?」
她只簡短的回答一句「Yes。」
全場觀眾立刻爆出如雷的掌聲。
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