According to the Lifewire website, these are the top hacks in the history

Ashley Madison Hack 2015: 37 Million Users

The Conficker Worm 2008: Still Infecting a Million Computers a Year

Stuxnet Worm 2010: Iran’s Nuclear Program Blocked

Home Depot Hack 2014: Over 50 Million Credit Cards

Spamhaus 2013: The Largest DDOS Attack in History

eBay Hack 2014: 145 Million Users Breached

JPMorgan Chase Hack 2014: 83 Million Accounts

The Melissa Virus 1999: 20 Percent of the World’s Computers Infected

LinkedIn 2016: 164 Million Accounts

Anthem Health Care Hack 2015: 78 Million Users

Sony Playstation Network Hack 2011: 77 Million Users

Global Payments 2012 Hack: 110 Million Credit Cards

Edward Snowden, the whistleblower,  a hero, a dissident, a traitor, and a patriot. Whatever name it may be but the work he has done is still a debatable issue and still in discussion.

According to the wiki, He is an American computer professional, former Central Intelligence Agency (CIA) employee, and former contractor for the United States government who copied and leaked classified information from the National Security Agency (NSA) in 2013 without authorization. His disclosures revealed numerous global surveillance programs, many run by the NSA and the Five Eyes Intelligence Alliance with the cooperation of telecommunication companies and European governments.

Basically know for

CGI or Computer Generated Imagery  is the application of computer graphics to create or contribute to images in art, printed media, video games, films, television programs, shorts, commercials, videos, and simulators. The visual scenes may be dynamic or static and may be two-dimensional (2D), though the term “CGI” is most commonly used to refer to 3D computer graphics used for creating scenes or special effects in films and television. Additionally, the use of 2D CGI is often mistakenly referred to as “traditional animation”, most often in the case when dedicated animation software such as Adobe Flash or Toon Boom is not used or the CGI is hand drawn using a tablet and mouse.

They use these following methods for accessing any users data.

• Phishing
• Malware
• Malicious Mobile Apps
• Smishing
•  Insecure Networks

As Far I know they dont hold any of the data with them as they use it for some or other form to penetrate into your systems, and get to use your systems space. Till they live their own traces of information about the hacking its absolutely not known to any outsiders.

• Cold
• AIDS
• Anemia
• Asthma
• Bronchiolitis
• Cancer
• Candidiasis (“Thrush”)
• Chagas disease
• Chickenpox
• Croup
• Cystic Fibrosis
• Cytomegalovirus (the virus most frequently transmitted before birth)
• dental caries
• Diabetes (Type 1)
• Diphtheria
• Duchenne muscular dystrophy
• Fifth disease
• Congenital Heart Disease
• Infectious mononucleosis
• Influenza
• Intussusception (medical disorder)
• Juvenile idiopathic arthritis
• Leukemia
• Measles
• Meningitis
• Molluscum contagiosum
• Mumps
• Nephrotic syndrome
• Osgood-Schlatter disease
• Osteogenesis Imperfecta (OI)
• Pneumonia
• Polio
• Rheumatic fever
• Rickets
• Roseola
• Rubella
• Sever’s disease
• Tetanus
• Tuberculosis
• Volvulus
• Whooping cough
• Hepatitis A
• Fever
• Scarlet fever (Scarletina)
• Lyme Disease
• Xerophthalmia
• Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal infections or PANDAS
• PANS

• Linux Administration (RHCE) …
• CCNA (Cisco Certified Network Associate) …
• CCNP – Switch (Cisco Certified Network Professional – Switch) …
• CCNP – Router (Cisco Certified Network Professional – Router) …
• CEH 10.0 (Certified Ethical Hacking – EC Council – Global Certification) …
• ECSA (Certified Security Analyst – EC-Council)

Here are the few.

• Nike Hypervenom Phantom 2 “Neymar x Jordan” …
• adidas X 16.1 Pure Chaos. …
• Pantofola d’Oro La Gazetta. …
• adidas ACE 16+ PURECONTROL Primeknit. …
• New Balance Visaro Pro “Galaxy” …
• Concave Volt+ …
• adidas Messi 16+ Pureagility. …
• Umbro Medusae “White/Black/Grenadine”

• Kevin Mitnick. A seminal figure in American hacking, Kevin Mitnick got his start as a teen. …
• Anonymous. …
• Adrian Lamo. …
• Albert Gonzalez. …
• Matthew Bevan and Richard Pryce. …
• Jeanson James Ancheta. …
• Michael Calce. …
• Kevin Poulsen.

• Kevin Mitnick. A seminal figure in American hacking, Kevin Mitnick got his start as a teen. …
• Anonymous. …
• Adrian Lamo. …
• Albert Gonzalez. …
• Matthew Bevan and Richard Pryce. …
• Jeanson James Ancheta. …
• Michael Calce. …
• Kevin Poulsen.

They are the well known hackers who successfully hacked into some sites and still not got caught. For further information regarding the same, check out here .

There are many important reasons to consider for designing an icon for IOS as the guidelines are pretty huge and as their product line up is varied, it requires a different set of sizes.

Here are few sizes as mentioned in the apple developers page.

For a detailed list of other device specs, check out the developer’s page.