Note for 33C3.

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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

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

影片:https://media.ccc.de/v/33c3-8074-recount_2016_an_uninvited_security_audit_of_the_u_s_presidential_election

  • 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)
  • 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。

Snowden in 33C3


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。

  1. https://www.gofundme.com/snowdenguardians
  2. https://fundrazr.com/snowdensguardians

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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