摘要:
Systems and methods for automatically reverse engineering an input data format using dynamic data flow analysis. Combining input data with a simulated execution of the binary program using the input data and analyzing the use of the data by the program to generate a BNL-like grammar representing the input data format. The input data can be application level protocols, network protocols or formatted files.
摘要:
The subject disclosure relates to systems and methods that secure anti-virus software through virtualization. Anti-virus systems can be maintained separate from user applications and operating system through virtualization. The user applications and operating system run in a guest virtual machine while anti-virus systems are isolated in a secure virtual machine. The virtual machines are partially interdependent such that the anti-virus systems can monitor user applications and operating systems while the anti-virus systems remain free from possible malicious attack originating from a user environment. Further, the anti-virus system is secured against zero-day attacks so that detection and recovery may occur post zero-day.
摘要:
A principal operating system based-browser controls access to resources. The resources are represented semantically in a resource object model. A browser kernel of the browser mediates resources access calls from principals. In some implementations the principals are web entities and the resources are peripheral devices. The resource object model separates device semantics from physical device access. Resource access control policies are maintained by the browser kernel and separated from device access mechanisms.
摘要:
To achieve end-to-end security, traditional machine-to-machine security measures are insufficient if the integrity of the graphical user interface (GUI) is compromised. GUI logic flaws are a category of software vulnerabilities that result from logic flaws in GUI implementation. The invention described here is a technology for uncovering these flaws using a systematic reasoning approach. Major steps in the technology include: (1) mapping a visual invariant to a program invariant; (2) formally modeling the program logic, the user actions and the execution context, and systematically exploring the possibilities of violations of the program invariant; (3) finding real spoofing attacks based on the exploration.
摘要:
Techniques for providing resource sharing in a multi-principal browser are described. Resource sharing includes managing a resource for web entity by determining how to divide the resource to share among two or more web entities based at least in part on a Document Object Model (DOM)-recursive resource allocation policy or an application-specified resource allocation policy. A web entity includes a principal instance contending for the resource. The process identifies resource allocation mechanisms from each resource type based at least in part on the DOM-recursive sharing policy or the application-specified resource allocation policy along with the resource type.
摘要:
A method and system for identifying a configuration parameter of a “sick” computer system that is at fault for causing an undesired behavior based on analysis of configuration parameters from other computer systems is provided. In one embodiment, a troubleshooting system collects “suspect” values for “suspect” configuration parameters used by a “sick” application when the undesired behavior was exhibited by the sick computer system. The troubleshooting system then compares the suspect values to sample values of the suspect configuration parameters retrieved from sample computer systems. The troubleshooting system uses that comparison to identify one or more suspect configuration parameters that are likely at fault for causing the application to exhibit the undesired behavior.
摘要:
Systems and methods for automatically reverse engineering an input data format using dynamic data flow analysis. Combining input data with a simulated execution of the binary program using the input data and analyzing the use of the data by the program to generate a BNL-like grammar representing the input data format. The input data can be application level protocols, network protocols or formatted files.
摘要:
A method and system for identifying a configuration parameter of a “sick” computer system that is at fault for causing an undesired behavior based on analysis of configuration parameters from other computer systems is provided. In one embodiment, a troubleshooting system collects “suspect” values for “suspect” configuration parameters used by a “sick” application when the undesired behavior was exhibited by the sick computer system. The troubleshooting system then compares the suspect values to sample values of the suspect configuration parameters retrieved from sample computer systems. The troubleshooting system uses that comparison to identify one or more suspect configuration parameters that are likely at fault for causing the application to exhibit the undesired behavior.
摘要:
Computer-executable instructions comprising some or all of a program can be delivered to a client for execution on a real-time basis such that the client receives anew the computer-executable instructions for each new execution of the program. Such an environment enables instrumentation instructions to be inserted into the computer-executable instructions after a request and prior to the delivery of the computer-executable instructions. The inserted instrumentation instructions can be spread across multiple deliveries of the same computer-executable instructions, and they can be modified to account for information received from previously inserted instrumentation instructions. The instrumentation instructions can be inserted as part of the server process, the client process, or as part of a proxy server that can be used at the discretion of the program developer.
摘要:
A method and system for retrieving data from devices in a way that seeks to preserve privacy and ensure the integrity of the retrieved data is provided. A retrieval system is implemented on a network of devices that communicate with each other via a secure communications link. Each device is directly connected to one or more “friend” devices that it trusts. The retrieval system operates by forwarding a request for data from one friend device to another friend device. Each friend device may optionally add data to the request until all the requested data is added. The request with the retrieved data is returned to the device that initiated the request.