نتایج جستجو برای: lockdown

تعداد نتایج: 8665  

2009
Amit Vasudevan Bryan Parno Ning Qu Adrian Perrig

We describe, build, and evaluate Lockdown, a system that significantly increases the level of security for online transactions, even on a platform infested with malicious code. Lockdown provides the user with a highly-protected, yet also highly-constrained trusted environment for performing online transactions, as well as a high-performance, general-purpose environment for all other (non-securi...

2009
Amit Vasudevan Bryan Parno Ning Qu Virgil D. Gligor Adrian Perrig

We describe, build, and evaluate Lockdown, a system that significantly increases the level of security for online transactions, even on a platform infested with malicious code. Lockdown provides the user with a highly-protected, yet also highly-constrained trusted environment for performing online transactions, as well as a high-performance, general-purpose environment for all other (non-securi...

2017
Nickolas M Jones Rebecca R Thompson Christine Dunkel Schetter Roxane Cohen Silver

During crisis events, people often seek out event-related information to stay informed of what is happening. However, when information from official channels is lacking or disseminated irregularly, people may be at risk for exposure to rumors that fill the information void. We studied information-seeking during a university lockdown following an active-shooter event. In study 1, students in the...

Journal: :CoRR 2014
Mathias Payer Antonio Barresi Thomas R. Gross

Applications written in low-level languages without type or memory safety are especially prone to memory corruption. Attackers gain code execution capabilities through such applications despite all currently deployed defenses by exploiting memory corruption vulnerabilities. Control-Flow Integrity (CFI) is a promising defense mechanism that restricts open control-flow transfers to a static set o...

2015
Mathias Payer Antonio Barresi Thomas R. Gross

Applications written in low-level languages without type or memory safety are prone to memory corruption. Attackers gain code execution capabilities through memory corruption despite all currently deployed defenses. Control-Flow Integrity (CFI) is a promising security property that restricts indirect control-flow transfers to a static set of well-known locations. We present Lockdown, a modular,...

2008
Andrew Blaich Qi Liao Aaron Striegel Douglas Thain

The administrator of an enterprise network has a responsibility to enforce the policies on the network. Yet, most security mechanisms do not map well to the intended policies. This has been due to the prevalence of simplistic tools that have poor enforcement but, yet are easy to manage. While advanced commercial solutions do exist that have stronger enforcement, they are significantly harder to...

2007
Andrew Blaich Qi Liao Brian Sullivan Aaron Striegel Douglas Thain Tim Wright

The administrator of an enterprise network has a responsibility to enforce the policies on the network. Yet, most security mechanisms do not map well to the intended policies. This has been due to the prevalence of simplistic tools that have poor enforcement but, yet are easy to manage. While advanced commercial solutions do exist that have stronger enforcement, they are significantly harder to...

2017
Marc Green

As Moore’s law continues to reduce the cost of computation at an exponential rate, embedded computing capabilities spread to ever-expanding application scenarios, such as smartphones, the Internet of Things, and automation, among many others. This trend has naturally caused the underlying technology to evolve and has introduced increasingly complex microarchitectures into embedded processors in...

Objectives: The proportion of older people in the population is very high. Many countries have been on lockdown due to the outbreak of COVID-19, with older adults being under higher mental, physical, and emotional pressures. The present study aimed to explain the lived experiences of older adults during the COVID-19 pandemic lockdown in Iran. Materials and Methods: This qualitative phenomenol...

2014
Daniel Williams MRCS Eng Guy Martin Livio Di Mascio

Posterolateral rotatory instability (PLRI) of the elbow is the most common type of chronic elbow instability and is principally due to lateral ulnar collateral ligament injury. We describe a novel surgical technique for the treatment of PLRI using the Surgilig/ LockDown. Using this tensioned double-braided polyester synthetic ligament to reconstruct the lateral ulnar collateral ligament it is p...

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